2.Read and translate.What are fossils? Fossils are parts of animals that died a very long time ago .you can find fossils in rocks.you can see the shape of the animal .some fossils are more than 500 m...

#Tiếng anh lớp 5

3

SA

Suu ARMY

25 tháng 6 2018

Nếu dịch vb trên ra thì nó sẽ như thế này :

2.Đọc và dịch.
Hóa thạch là gì?
Hóa thạch là một phần của động vật đã chết một thời gian rất dài trước đây. Bạn có thể tìm thấy hóa thạch trong đá. Bạn có thể nhìn thấy hình dạng của động vật. Một số hóa thạch đã hơn 500 triệu năm tuổi.

Tại sao hóa thạch lại quan trọng?
Hóa thạch cho chúng ta biết về quá khứ. Chúng ta có thể tìm hiểu về các loại đá và chúng ta có thể tìm hiểu về các loài động vật đã sống rất lâu trước đây.

Bạn có thể tìm thấy hóa thạch ở đâu?
Bạn có thể tìm thấy hóa thạch ở nhiều nơi.
Bạn có thể tìm thấy chúng trên núi và trong hồ. Bạn có thể tìm thấy chúng trên sông và trên bãi biển. Bạn cũng có thể tìm thấy chúng dưới mặt đất.

Làm thế nào tôi có thể nhìn thấy một hóa thạch?
Bạn có thể ghé thăm bảo tàng để xem hóa thạch, hoặc bạn có thể mua chúng trong các cửa hàng hóa thạch đặc biệt. Bạn cũng có thể tìm kiếm hóa thạch trên bãi biển. Đôi khi, bạn có thể nhìn thấy chúng trên cát hoặc trong đá.

Đây là một hóa thạch của một ammonit. Những con vật này sống ở biển khoảng 400 triệu năm trước. Hôm nay, bạn có thể tìm thấy những hóa thạch này trên các bãi biển ở Anh.

Đây là một hóa thạch của một cuộc chiến. Nhà khoa học đã tìm thấy nó ở sa mạc phía Tây ở Ai Cập. Hàng triệu năm trước Sa mạc Tây là một biển.

Nếu đúng thì tk nhé , mơn nhìunắm !!!

~ HOK TỐT ~

TH

Tiên Hồ Đỗ Thị Cẩm

25 tháng 6 2018

Em tham khảo bài này nha:

Hóa thạch là gì?

Hóa thạch là những phần của động vật đã chết một thời gian rất lâu trước đây. Bạn có thể tìm thấy những hóa thạch trong những hốc đá. Bạn có thể nhìn thấy hình dạng của động vật. Một vài hóa thạch đã hơn 500 triệu năm tuổi.

Tại sao hóa thạch lại quan trọng?

Hóa thạch cho chúng ta thấy về quá khứ.Chúng ta có thể học về những loại đá và về những động vật đã sống một thời gian rất lâu trước đây.

Bạn có thể tìm thấy hóa thạch ở đâu?

Bạn có thể tìm thấy hóa thạch ở nhiều nơi.

Bạn có thể tìm thấy chúng ở những ngọn núi và hồ.Bạn có thể tìm thấy chúng ở những con sông và biển.Bạn cũng có thể tìm thấy chúng ở dưới đất.

Làm thế nào để tôi có thể nhìn thấy một hóa thạch?

Bạn có thể viếng thăm một bảo tàng để nhìn thấy những hóa thạch hoặc bạn có thể mua chúng ở những cửa hàng bán hóa thạch. Bạn cũng có thể nhìn thấy hóa thạch trên những bãi biển. Đôi khi, bạn có thể thấy chúng trên cát hoặc trong hốc đá.

Đây là hóa thạch của một con cúc( thứ vỏ ốc hóa đá) . Những động vật này đã sống ở biển khoảng 400 triệu năm trước đây. Ngày nay, bạn có thể tìm những hóa thạch này trên bờ biển ở Anh.

Đây là hóa thạch của một ....( hình như em ghi thiếu chữ h trong từ whale là cá voi đúng hông, chứ wale có nghĩa là vết lằn hay gì đó tương tự, xem lại đi nha). Nhà nghiên cứu khoa học đã tìm thấy nó ở Sa mạc phía tây ở Egypt. Hàng triệu năm về trước Sa mạc phía tây từng là một bãi biển.

Hết rồi đó, nhưng mà chị hổng phải phiên dịch viên nên lời văn hơi lũng cũng @_@, xin lỗi em nha!

Unlike buried treasure and some minerals, fossils are usually not valuable in themselves. However, most of the fossils you find will be of greatest value to you. They will help you learn much about the geologic history of the earth and its inhabitants. If it were not for fossils, we would have no way of knowing about the animals that once roamed the earth or that once crawled on the bottom of the ancient seas. In fact, we would not even know for sure that there were once seas in some regions...

PH

Phan Hà Thanh

4 tháng 7 2019

Unlike buried treasure and some minerals, fossils are usually not valuable in themselves. However, most of the fossils you find will be of greatest value to you. They will help you learn much about the geologic history of the earth and its inhabitants.

If it were not for fossils, we would have no way of knowing about the animals that once roamed the earth or that once crawled on the bottom of the ancient seas. In fact, we would not even know for sure that there were once seas in some regions if it were not for the many fossils of sea animals that we find there.

You can look at some fossils and see for yourself the shape of the ancient animals. Even if you collect only bits of one kind of fossil, you may still be able to tell what it looked like. Making sense out of fossil bits is a little like working a jigsaw puzzle. Sometimes you will lose pieces, but you can still recognize the picture and even use your imagination to fill in missing details. The habits of ancient sea animals are not so easy to determine. Therefore, scientists study the structure and the habits of similar living animals to learn what the ancient ones must have been like. There are some things, however, that neither the study of fossils nor the study of living animals can tell us. For example, no one knows what colour most ancient sea animals were. Also, since the soft parts disappeared soon after death, many details of their internal structure are unknown. So the pictures of ancient sea creatures (as well as dinosaurs!) are what scientists think the animals looked like. Reconstructing the life of an ancient sea animal on the basis of fossil evidence and the characteristics of similar living animals is a little like relying on circumstantial evidence in court.

1. This passage is mainly about animals that __________.

A. have very tough hides

B. once lived on the earth

C. inhabit the seas of today

D. are becoming extinct

2. With the help of fossils we can __________.

A. reconstruct life of the past

B. predict the future

C. explain the changes of the seasons

D. save some species of animals from extinction

3. Many details of ancient animals are lacking because __________.

A. many species have not been found

B. volcanic disasters have permanently buried many fossils

C.many fossils lie in deep water and cannot be recovered

D. soon after death the soft parts of the body decay

49. To “determine" in the passage is closest in meaning to __________.

A. come across

B. study

C. find out

D. imitate

50. This passage implies that a scientist's evaluation of the past is based on __________.

A. laboratory experiments with live animals

B. a few facts mixed with a lot of opinions

C. predictions made in the past and present

D. field studies of our society

#Tiếng anh lớp 8

1

LT

Lê Thanh Nhàn

4 tháng 7 2019

1 B. once lived on the earth

2 A. reconstruct life of the past

3 D. soon after death the soft parts of the body decay

4 C. find out

5 B. a few facts mixed with a lot of opinions

Read the following passage and mark the letter A,B,C or D on your answers sheet to indicate the correct answer to each of the questions. Generally, in order to be preserved in the fossil record, organisms must possess hard body parts such as shells or bones. Soft, fleshy structures are quickly destroyed by predators or decayed by bacteria. Even hard parts left on the surface for any length of time will be destroyed, therefore, organisms must be buried rapidly to escape destruction by the...

LQ

Lê Quỳnh Anh

30 tháng 6 2017

Read the following passage and mark the letter A,B,C or D on your answers sheet to indicate the correct answer to each of the questions.

Generally, in order to be preserved in the fossil record, organisms must possess hard body parts such as shells or bones. Soft, fleshy structures are quickly destroyed by predators or decayed by bacteria. Even hard parts left on the surface for any length of time will be destroyed, therefore, organisms must be buried rapidly to escape destruction by the elements and to be protected against agents of weathering and erosion. Marine organisms thus are better candidates for fossilization than those living on the land because the ocean is typical the site of sedimentation, whereas the land is largely the site of erosion. The beds of ancient lakes were also excellent sites for rapid burial of skeletal remains of freshwater organisms and skeletons of other animals, including those of early humans, Ancient swaps were particularly plentiful with prolific growths of vegetation, which fossilized in abundance. Many animals became trapped in bogs overgrown by vegetation. The environment of the swaps kept bacterial decay to a minimum, which greatly aided in the preservation of plants and animals. The rapidly accumulating sediments in flood plains, deltas, and stream channels buried freshwater organisms, along with other plants and animals that happened to fall into the water.

Only a small traction of all the organisms that have ever lived are preserved as fossils. Normally, the remains of a plant or animal are completely destroyed through predation and decay. Although it seems that fossilization is common for some organisms, for others it is almost impossible. For the most part of, the remains of organisms are recycled in the earth, which is fortunate because otherwise soil and water would soon became depleted of essential nutrients. Also, most of the fossils exposed on Earth’s surface are destroyed by weathering processes. This make for an incomplete fossil record with poor or no representation of certain species. The best fossils are those composed of that form the vast majority of unaltered fossils. Calcite and aragonite also contributed to a substantial number of fossils of certain organisms.

The best fossils are those_______

A. consist of Calcite and aragonite

B. from hard parts of animals or plants

C. still in the shape of the original animal or plant

D. animals or plants common for fossilization

1

DH

Dương Hoàn Anh

30 tháng 6 2017

Chọn đáp án A

Kỹ năng: Đọc

Giải thích:

Câu hỏi: Hóa thạch tốt nhất là ________

Đáp án A: bao gồm Canxi và aragonite

Thông tin ở câu: “The best fossils are those composed of that form the vast majority of unaltered fossils. Calcite and aragonite also contributed to a substantial number of fossils of certain organisms”

Read the following passage and mark the letter A,B,C or D on your answers sheet to indicate the correct answer to each of the questions.Generally, in order to be preserved in the fossil record, organisms must possess hard body parts such as shells or bones. Soft, fleshy structures are quickly destroyed by predators or decayed by bacteria. Even hard parts left on the surface for any length of time will be destroyed, therefore, organisms must be buried rapidly to escape destruction by the...

LQ

Lê Quỳnh Anh

7 tháng 4 2017

Read the following passage and mark the letter A,B,C or D on your answers sheet to indicate the correct answer to each of the questions.

Generally, in order to be preserved in the fossil record, organisms must possess hard body parts such as shells or bones. Soft, fleshy structures are quickly destroyed by predators or decayed by bacteria. Even hard parts left on the surface for any length of time will be destroyed, therefore, organisms must be buried rapidly to escape destruction by the elements and to be protected against agents of weathering and erosion. Marine organisms thus are better candidates for fossilization than those living on the land because the ocean is typical the site of sedimentation, whereas the land is largely the site of erosion.

The beds of ancient lakes were also excellent sites for rapid burial of skeletal remains of freshwater organisms and skeletons of other animals, including those of early humans, Ancient swaps were particularly plentiful with prolific growths of vegetation, which fossilized in abundance. Many animals became trapped in bogs overgrown by vegetation. The environment of the swaps kept bacterial decay to a minimum, which greatly aided in the preservation of plants and animals. The rapidly accumulating sediments in flood plains, deltas, and stream channels buried freshwater organisms, along with other plants and animals that happened to fall into the water.

Only a small traction of all the organisms that have ever lived are preserved as fossils. Normally, the remains of a plant or animal are completely destroyed through predation and decay. Although it seems that fossilization is common for some organisms, for others it is almost impossible. For the most part of, the remains of organisms are recycled in the earth, which is fortunate because otherwise soil and water would soon became depleted of essential nutrients. Also, most of the fossils exposed on Earth’s surface are destroyed by weathering processes. This make for an incomplete fossil record with poor or no representation of certain species. The best fossils are those composed of that form the vast majority of unaltered fossils. Calcite and aragonite also contributed to a substantial number of fossils of certain organisms.

he best fossils are those

A. consist of Calcite and aragonite

B. from hard parts of animals or plants

C. still in the shape of the original animal or plant

D. animals or plants common for fossilization

1

DH

Dương Hoàn Anh

7 tháng 4 2017

Đáp án là A.

Ý trong bài: The best fossils are those composed of that form the vast majority of unaltered fossils. Calcite and aragonite also contributed to a substantial number of fossils of certain organisms.

Read the following passage and mark the letter A,B,C or D on your answers sheet to indicate the correct answer to each of the questions.Generally, in order to be preserved in the fossil record, organisms must possess hard body parts such as shells or bones. Soft, fleshy structures are quickly destroyed by predators or decayed by bacteria. Even hard parts left on the surface for any length of time will be destroyed, therefore, organisms must be buried rapidly to escape destruction by the...

LQ

Lê Quỳnh Anh

27 tháng 4 2019

Read the following passage and mark the letter A,B,C or D on your answers sheet to indicate the correct answer to each of the questions.

Generally, in order to be preserved in the fossil record, organisms must possess hard body parts such as shells or bones. Soft, fleshy structures are quickly destroyed by predators or decayed by bacteria. Even hard parts left on the surface for any length of time will be destroyed, therefore, organisms must be buried rapidly to escape destruction by the elements and to be protected against agents of weathering and erosion. Marine organisms thus are better candidates for fossilization than those living on the land because the ocean is typical the site of sedimentation, whereas the land is largely the site of erosion.

The beds of ancient lakes were also excellent sites for rapid burial of skeletal remains of freshwater organisms and skeletons of other animals, including those of early humans, Ancient swaps were particularly plentiful with prolific growths of vegetation, which fossilized in abundance. Many animals became trapped in bogs overgrown by vegetation. The environment of the swaps kept bacterial decay to a minimum, which greatly aided in the preservation of plants and animals. The rapidly accumulating sediments in flood plains, deltas, and stream channels buried freshwater organisms, along with other plants and animals that happened to fall into the water.

Only a small traction of all the organisms that have ever lived are preserved as fossils. Normally, the remains of a plant or animal are completely destroyed through predation and decay. Although it seems that fossilization is common for some organisms, for others it is almost impossible. For the most part of, the remains of organisms are recycled in the earth, which is fortunate because otherwise soil and water would soon became depleted of essential nutrients. Also, most of the fossils exposed on Earth’s surface are destroyed by weathering processes. This make for an incomplete fossil record with poor or no representation of certain species. The best fossils are those composed of that form the vast majority of unaltered fossils. Calcite and aragonite also contributed to a substantial number of fossils of certain organisms.

According to the passage, an organisms without hard body parts

A. is not heavy enough to sink below the surface

B. is not attractive to predators

C. is not likely to appear in the fossil record

D. takes a long time to decay

1

DH

Dương Hoàn Anh

27 tháng 4 2019

Đáp án là A.

Ý trong bài: Even hard parts left on the surface for any length of time will be destroyed, therefore, organisms must be buried rapidly to escape destruction by the elements and to be protected against agents of weathering and erosion.

Read the following passage and mark the letter A,B,C or D on your answers sheet to indicate the correct answer to each of the questions.Generally, in order to be preserved in the fossil record, organisms must possess hard body parts such as shells or bones. Soft, fleshy structures are quickly destroyed by predators or decayed by bacteria. Even hard parts left on the surface for any length of time will be destroyed, therefore, organisms must be buried rapidly to escape destruction by the...

LQ

Lê Quỳnh Anh

28 tháng 6 2018

Read the following passage and mark the letter A,B,C or D on your answers sheet to indicate the correct answer to each of the questions.

Generally, in order to be preserved in the fossil record, organisms must possess hard body parts such as shells or bones. Soft, fleshy structures are quickly destroyed by predators or decayed by bacteria. Even hard parts left on the surface for any length of time will be destroyed, therefore, organisms must be buried rapidly to escape destruction by the elements and to be protected against agents of weathering and erosion. Marine organisms thus are better candidates for fossilization than those living on the land because the ocean is typical the site of sedimentation, whereas the land is largely the site of erosion.

The beds of ancient lakes were also excellent sites for rapid burial of skeletal remains of freshwater organisms and skeletons of other animals, including those of early humans, Ancient swaps were particularly plentiful with prolific growths of vegetation, which fossilized in abundance. Many animals became trapped in bogs overgrown by vegetation. The environment of the swaps kept bacterial decay to a minimum, which greatly aided in the preservation of plants and animals. The rapidly accumulating sediments in flood plains, deltas, and stream channels buried freshwater organisms, along with other plants and animals that happened to fall into the water.

Only a small traction of all the organisms that have ever lived are preserved as fossils. Normally, the remains of a plant or animal are completely destroyed through predation and decay. Although it seems that fossilization is common for some organisms, for others it is almost impossible. For the most part of, the remains of organisms are recycled in the earth, which is fortunate because otherwise soil and water would soon became depleted of essential nutrients. Also, most of the fossils exposed on Earth’s surface are destroyed by weathering processes. This make for an incomplete fossil record with poor or no representation of certain species. The best fossils are those composed of that form the vast majority of unaltered fossils. Calcite and aragonite also contributed to a substantial number of fossils of certain organisms.

It can be inferred that flood plains, deltas, and stream channels are similar in which of the following ways?

A. Rapid sedimentation in such locations makes it difficult to locate fossils.

B. Such locations are likely to rich sources of fossils.

C. Fossilized human remains are only rarely found in such locations

D. Animals rather than plants have been preserved at such locations.

1

DH

Dương Hoàn Anh

28 tháng 6 2018

Đáp án là B.

The rapidly accumulating sediments in flood plains, deltas, and stream channels buried freshwater organisms, along with other plants and animals that happened to fall into the water.

Read the following passage and mark the letter A,B,C or D on your answers sheet to indicate the correct answer to each of the questions. Generally, in order to be preserved in the fossil record, organisms must possess hard body parts such as shells or bones. Soft, fleshy structures are quickly destroyed by predators or decayed by bacteria. Even hard parts left on the surface for any length of time will be destroyed, therefore, organisms must be buried rapidly to escape destruction by the...

LQ

Lê Quỳnh Anh

18 tháng 9 2019

Read the following passage and mark the letter A,B,C or D on your answers sheet to indicate the correct answer to each of the questions.

Generally, in order to be preserved in the fossil record, organisms must possess hard body parts such as shells or bones. Soft, fleshy structures are quickly destroyed by predators or decayed by bacteria. Even hard parts left on the surface for any length of time will be destroyed, therefore, organisms must be buried rapidly to escape destruction by the elements and to be protected against agents of weathering and erosion. Marine organisms thus are better candidates for fossilization than those living on the land because the ocean is typical the site of sedimentation, whereas the land is largely the site of erosion. The beds of ancient lakes were also excellent sites for rapid burial of skeletal remains of freshwater organisms and skeletons of other animals, including those of early humans, Ancient swaps were particularly plentiful with prolific growths of vegetation, which fossilized in abundance. Many animals became trapped in bogs overgrown by vegetation. The environment of the swaps kept bacterial decay to a minimum, which greatly aided in the preservation of plants and animals. The rapidly accumulating sediments in flood plains, deltas, and stream channels buried freshwater organisms, along with other plants and animals that happened to fall into the water.

Only a small traction of all the organisms that have ever lived are preserved as fossils. Normally, the remains of a plant or animal are completely destroyed through predation and decay. Although it seems that fossilization is common for some organisms, for others it is almost impossible. For the most part of, the remains of organisms are recycled in the earth, which is fortunate because otherwise soil and water would soon became depleted of essential nutrients. Also, most of the fossils exposed on Earth’s surface are destroyed by weathering processes. This make for an incomplete fossil record with poor or no representation of certain species. The best fossils are those composed of that form the vast majority of unaltered fossils. Calcite and aragonite also contributed to a substantial number of fossils of certain organisms.

It can be inferred that flood plains, deltas, and stream channels are similar in which of the following ways?

A. Rapid sedimentation in such locations makes it difficult to locate fossils

B. Such locations are likely to rich sources of fossils.

C. Fossilized human remains are only rarely found in such locations

D. Animals rather than plants have been preserved at such locations.

1

DH

Dương Hoàn Anh

18 tháng 9 2019

Chọn đáp án B

Kỹ năng: Đọc

Giải thích:

Câu hỏi: Có thể suy ra rằng lũ lụt ở đồng bằng, châu thổ và kênh đào giống nhau ở cách nào?

Đáp án B: Những tơi này đều giàu tài nguyên hóa thạch

Thông tin ở câu: “The rapidly accumulating sediments in flood plains, deltas, and stream channels buried freshwater organisms, along with other plants and animals that happened to fall into the water.”

Read the following passage and mark the letter A,B,C or D on your answers sheet to indicate the correct answer to each of the questions. Generally, in order to be preserved in the fossil record, organisms must possess hard body parts such as shells or bones. Soft, fleshy structures are quickly destroyed by predators or decayed by bacteria. Even hard parts left on the surface for any length of time will be destroyed, therefore, organisms must be buried rapidly to escape destruction by the...

LQ

Lê Quỳnh Anh

6 tháng 1 2018

Read the following passage and mark the letter A,B,C or D on your answers sheet to indicate the correct answer to each of the questions.

Generally, in order to be preserved in the fossil record, organisms must possess hard body parts such as shells or bones. Soft, fleshy structures are quickly destroyed by predators or decayed by bacteria. Even hard parts left on the surface for any length of time will be destroyed, therefore, organisms must be buried rapidly to escape destruction by the elements and to be protected against agents of weathering and erosion. Marine organisms thus are better candidates for fossilization than those living on the land because the ocean is typical the site of sedimentation, whereas the land is largely the site of erosion. The beds of ancient lakes were also excellent sites for rapid burial of skeletal remains of freshwater organisms and skeletons of other animals, including those of early humans, Ancient swaps were particularly plentiful with prolific growths of vegetation, which fossilized in abundance. Many animals became trapped in bogs overgrown by vegetation. The environment of the swaps kept bacterial decay to a minimum, which greatly aided in the preservation of plants and animals. The rapidly accumulating sediments in flood plains, deltas, and stream channels buried freshwater organisms, along with other plants and animals that happened to fall into the water.

Only a small traction of all the organisms that have ever lived are preserved as fossils. Normally, the remains of a plant or animal are completely destroyed through predation and decay. Although it seems that fossilization is common for some organisms, for others it is almost impossible. For the most part of, the remains of organisms are recycled in the earth, which is fortunate because otherwise soil and water would soon became depleted of essential nutrients. Also, most of the fossils exposed on Earth’s surface are destroyed by weathering processes. This make for an incomplete fossil record with poor or no representation of certain species. The best fossils are those composed of that form the vast majority of unaltered fossils. Calcite and aragonite also contributed to a substantial number of fossils of certain organisms.

Why are marine organisms good candidates for fossilization?

A. It take longer for them to be preserved

B. They have more fleshy structures than land organisms

C. The water environment speeds the decay caused by bacteria

D. It is likely that they will be buried rapidly

1

DH

Dương Hoàn Anh

6 tháng 1 2018

Chọn đáp án B

Kỹ năng: Đọc

Giải thích:

Câu hỏi: Tại sao sinh vật dưới biển lại là ứng cử viên tốt cho sự hóa thạch?

Đáp án B: Chúng có cấu trúc thịt dày hơn các loài trên mặt đất

Read the following passage and mark the letter A,B,C or D on your answers sheet to indicate the correct answer to each of the questions.Generally, in order to be preserved in the fossil record, organisms must possess hard body parts such as shells or bones. Soft, fleshy structures are quickly destroyed by predators or decayed by bacteria. Even hard parts left on the surface for any length of time will be destroyed, therefore, organisms must be buried rapidly to escape destruction by the...

LQ

Lê Quỳnh Anh

5 tháng 5 2019

Read the following passage and mark the letter A,B,C or D on your answers sheet to indicate the correct answer to each of the questions.

Generally, in order to be preserved in the fossil record, organisms must possess hard body parts such as shells or bones. Soft, fleshy structures are quickly destroyed by predators or decayed by bacteria. Even hard parts left on the surface for any length of time will be destroyed, therefore, organisms must be buried rapidly to escape destruction by the elements and to be protected against agents of weathering and erosion. Marine organisms thus are better candidates for fossilization than those living on the land because the ocean is typical the site of sedimentation, whereas the land is largely the site of erosion.

The beds of ancient lakes were also excellent sites for rapid burial of skeletal remains of freshwater organisms and skeletons of other animals, including those of early humans, Ancient swaps were particularly plentiful with prolific growths of vegetation, which fossilized in abundance. Many animals became trapped in bogs overgrown by vegetation. The environment of the swaps kept bacterial decay to a minimum, which greatly aided in the preservation of plants and animals. The rapidly accumulating sediments in flood plains, deltas, and stream channels buried freshwater organisms, along with other plants and animals that happened to fall into the water.

Only a small traction of all the organisms that have ever lived are preserved as fossils. Normally, the remains of a plant or animal are completely destroyed through predation and decay. Although it seems that fossilization is common for some organisms, for others it is almost impossible. For the most part of, the remains of organisms are recycled in the earth, which is fortunate because otherwise soil and water would soon became depleted of essential nutrients. Also, most of the fossils exposed on Earth’s surface are destroyed by weathering processes. This make for an incomplete fossil record with poor or no representation of certain species. The best fossils are those composed of that form the vast majority of unaltered fossils. Calcite and aragonite also contributed to a substantial number of fossils of certain organisms.

Why are marine organisms good candidates for fossilization?

A. It take longer for them to be preserved

B. They have more fleshy structures than land organisms

C. The water environment speeds the decay caused by bacteria

D. It is likely that they will be buried rapidly

1

DH

Dương Hoàn Anh

5 tháng 5 2019

Đáp án là B.

Ý trong bài: in order to be preserved in the fossil record, organisms must possess hard body parts such as shells or bones. Soft, fleshy structures are quickly destroyed by predators or decayed by bacteria. Even hard parts left on the surface for any length of time will be destroyed, therefore, organisms must be buried rapidly to escape destruction by the elements and to be protected against agents of weathering and erosion. => phải có cấu trúc thịt dày hơn thì mới khó bị phân hủy => “marine organisms” trở thành “good candidates”

Read the following passage and mark the letter A,B,C or D on your answers sheet to indicate the correct answer to each of the questions.Generally, in order to be preserved in the fossil record, organisms must possess hard body parts such as shells or bones. Soft, fleshy structures are quickly destroyed by predators or decayed by bacteria. Even hard parts left on the surface for any length of time will be destroyed, therefore, organisms must be buried rapidly to escape destruction by the...

LQ

Lê Quỳnh Anh

1 tháng 11 2017

Read the following passage and mark the letter A,B,C or D on your answers sheet to indicate the correct answer to each of the questions.

Generally, in order to be preserved in the fossil record, organisms must possess hard body parts such as shells or bones. Soft, fleshy structures are quickly destroyed by predators or decayed by bacteria. Even hard parts left on the surface for any length of time will be destroyed, therefore, organisms must be buried rapidly to escape destruction by the elements and to be protected against agents of weathering and erosion. Marine organisms thus are better candidates for fossilization than those living on the land because the ocean is typical the site of sedimentation, whereas the land is largely the site of erosion.

The beds of ancient lakes were also excellent sites for rapid burial of skeletal remains of freshwater organisms and skeletons of other animals, including those of early humans, Ancient swaps were particularly plentiful with prolific growths of vegetation, which fossilized in abundance. Many animals became trapped in bogs overgrown by vegetation. The environment of the swaps kept bacterial decay to a minimum, which greatly aided in the preservation of plants and animals. The rapidly accumulating sediments in flood plains, deltas, and stream channels buried freshwater organisms, along with other plants and animals that happened to fall into the water.

Only a small traction of all the organisms that have ever lived are preserved as fossils. Normally, the remains of a plant or animal are completely destroyed through predation and decay. Although it seems that fossilization is common for some organisms, for others it is almost impossible. For the most part of, the remains of organisms are recycled in the earth, which is fortunate because otherwise soil and water would soon became depleted of essential nutrients. Also, most of the fossils exposed on Earth’s surface are destroyed by weathering processes. This make for an incomplete fossil record with poor or no representation of certain species. The best fossils are those composed of that form the vast majority of unaltered fossils. Calcite and aragonite also contributed to a substantial number of fossils of certain organisms.

The word “aided ” in the second paragraph is closest in meaning to

A. counted

B. reformed

C. reversed

D. helped

1

DH

Dương Hoàn Anh

1 tháng 11 2017

Đáp án là D.

aid = help: giúp ...

Nghĩa các từ còn lại: count: đếm; reverse: duy trì; reform:cải cách