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4 tháng 5 2021

air pollution, water pollution,...

4 tháng 5 2021

noise pollution

 

30 tháng 3 2016
Advantages of Solar Power?
  • Solar energy is a clean and renewable energy source.
  • Once a solar panel is installed, solar energy can be produced free of charge.
  • Solar energy will last forever whereas it is estimated that the world’s oil reserves will last for 30 to 40 years.
  • Solar energy causes no pollution.
  • Solar cells make absolutely no noise at all. On the other hand, the giant machines utilized for pumping oil are extremely noisy and therefore very impractical.
  • Very little maintenance is needed to keep solar cells running. There are no moving parts in a solar cell which makes it impossible to really damage them.
  • In the long term, there can be a high return on investment due to the amount of free energy a solar panel can produce, it is estimated that the average household will see 50% of their energy coming in from solar panels.

 

Disadvantages of Solar Power?
  • Solar panels can be expensive to install resulting in a time-lag of many years for savings on energy bills to match initial investments.
  • Electricity generation depends entirely on a countries exposure to sunlight; this could be limited by a countries climate.
  • Solar power stations do not match the power output of similar sized conventional power stations; they can also be very expensive to build.
  • Solar power is used to charge batteries so that solar powered devices can be used at night. The batteries can often be large and heavy, taking up space and needing to be replaced from time to time.

 

8 tháng 12 2017

There are many kinds of ___environmental____ pollution such as air pollution, land pollution, water pollution.

6 tháng 5 2022

`=>` `B`

8 tháng 6 2018

Được tôn vinh là ánh sáng mở đường cho một cuộc cách mạng năng lượng, nhưng giới khoa học mới đây đã chỉ ra chính những chiếc đèn LED lại đang đẩy mạnh tình trạng ô nhiễm ánh sáng toàn cầu, kéo theo những hậu quả nghiêm trọng đối với sức khỏe con người và động vật.

Nghiên cứu đăng tải trên tạp chí Science Advances ngày 22/11 phân tích dữ liệu vệ tinh cho thấy những buổi tối trên Trái Đất đang có xu hướng trở nên sáng hơn, với diện tích sử dụng ánh sáng nhân tạo ngoài trời tăng với tốc độ 2,2%/năm trong giai đoạn 2012-2016.

Các chuyên gia nhấn mạnh đây là một vấn đề nghiêm trọng vì ánh sáng vào ban đêm đã được xác định là làm rối loạn đồng hồ sinh học ở người và tăng nguy cơ các bệnh ung thư, tiểu đường cũng như chứng trầm cảm. Ánh sáng vào ban đêm thậm chí có thể giết chết nhiều động vật như đèn thu hút côn trùng hay làm nhiễu loạn khả năng định hướng của chim hay rùa biển.

Chris Kyba, nhà vật lý của Trung tâm Nghiên cứu Địa chất Đức và cũng là chủ nhiệm công trình nghiên cứu, cho rằng vấn đề không nằm ở công nghệ đèn LED, vốn được ưa chuộng nhờ đặc tính tiết kiệm điện.

Phát biểu họp báo về công trình nghiên cứu mới, ông Kyba cho rằng vấn đề là việc con người có xu hướng lạm dụng khi dùng quá nhiều đèn với suy nghĩ họ đang sử dụng công nghệ tiết kiệm. Các nhà khoa học gọi đây là "hiệu ứng đảo ngược."

Theo một nghiên cứu năm 2010 công bố trên tạp chí Ecological Economics, những buổi tối quá sáng không chỉ ảnh hưởng tới môi trường tự nhiên mà còn gây thiệt hại gần 7 tỷ USD hàng năm do "tác động tiêu cực đối với đời sống hoang dã, sức khỏe, ngành thiên văn và lãng phí năng lượng."

Travis Longcore, chuyên gia của Đại học Nam California, cho rằng kết luận của nghiên cứu mới "không có gì bất ngờ" đối với những người đã bỏ nhiều năm theo đuổi vấn đề này. Chuyên gia này cho rằng con số 2,2% mà nghiên cứu đưa ra là "không bền vững."

Các giải pháp được đề xuất bao gồm sử dụng các nguồn sáng cường độ thấp, tắt đèn khi không sử dụng, dùng đèn LED ánh sáng ấm thay vì ánh sáng xanh hay tím để hạn chế tác hại đối với sức khỏe con người và động vật, và quan trọng nhất là thay đổi cách suy nghĩ của người dân về việc quá dựa dẫm vào nguồn sáng nhân tạo vào ban đêm.

11 tháng 8 2017

Hãy thêm từ vào chỗ chấm và dịch bài văn sau:

Every wants to reduce pollution. But the pollution problem is..as...... Complicated as it is serious. It is complicated......because.....much pollution is caused by things that benefit people.....for example......, exhaust from automobiles causes a larger percentage of air pollution. But the automobiles......provide....... transportation for millions of people. Factories discharge much......of..... the material that pollutes the air and water, but factories give employment to a larger number of people.

11 tháng 8 2017

chị diệu linh ơi

Air pollution occurs when wastes dirty the air. People reduce most of the wastes that cause air pollution. Such wastes can be in the form of gases or particles of solid or liquid matter. These substances result chiefly from burning fuel to power motor vehicles and to heat the buildings. Industrial processes and the burning of garbage also contribute to air pollution. Besides, there are other polluting substances that exist naturally in the air. They include dust, pollen, soil particles, and...
Đọc tiếp

Air pollution occurs when wastes dirty the air. People reduce most of the wastes that cause air pollution. Such wastes can be in the form of gases or particles of solid or liquid matter. These substances result chiefly from burning fuel to power motor vehicles and to heat the buildings. Industrial processes and the burning of garbage also contribute to air pollution. Besides, there are other polluting substances that exist naturally in the air. They include dust, pollen, soil particles, and naturally occurring gases.

The rapid growth of population and industry and the increasing use of automobiles and airplanes have made air pollution a serious problem. The air we breathe has become so filled with pollutants that it can cause health problems. It also harms plants, animals, buildings materials, and fabrics.

1.     Where do most of wastes that cause air pollution come from?

………………………………………………………………………………....……

2.     What contributes to air pollution?

………………………………………………………………………………………

3. What are natural pollutants?

……………………………………………………………………………………

4. What has made air pollution a serious problem?

……………………………………………………………………………………

1
20 tháng 8 2021

1.     Where do most of wastes that cause air pollution come from?

…………………………………They come from burning fuel to power motor vehicles and to heat the buildings.……………………………………………....……

2.     What contributes to air pollution?

……………………………… Industrial processes and the burning of garbage………………………………………………………

3. What are natural pollutants?

………………………………dust, pollen, soil particles, and naturally occurring gases……………………………………………………

4. What has made air pollution a serious problem?

 

……………………The rapid growth of population and industry and the increasing use of automobiles and airplanes………………………………………………………………

III. Read the text carefully, then do the tasks.Large cities often have problems that small towns and rural areas do not have. Two of the biggest problems are heavy traffic and the pollution that cars create. Of course. Traffic problems and pollution are not only found in big cities. However, the higher populations and larger number of cars on the roads in cities can make the problems happen more often and with more noticeable effects.One of the most common traffic problems the large cities...
Đọc tiếp

III. Read the text carefully, then do the tasks.

Large cities often have problems that small towns and rural areas do not have. Two of the biggest problems are heavy traffic and the pollution that cars create. Of course. Traffic problems and pollution are not only found in big cities. However, the higher populations and larger number of cars on the roads in cities can make the problems happen more often and with more noticeable effects.

One of the most common traffic problems the large cities have is congestion. As the population of a city increases, so does the number of cars on the road. Cities cannot always improve the number and size of their roads and highways to keep up with the number of cars. The result is traffic congestion, or traffic jams.

When traffic jams happen, cars that are stuck in the congestion continue to run their engines. This creates pollution and is a big problems. Pollution causes health problems for the people in cities and also hurts the environment.

 

 

A. Match the words with their meanings.

1. rural a. being too crowded or too full

2. noticeable b. unable to move

3. congestion c. easy to see or recognize

4. traffic jam d. in the countryside, not in the city

5. stuck e. too many vehicles in one place prevents

B. Choose the correct answers.

1. Where do traffic problems and pollution frequently happen?

a. small towns b. rural areas c. big cities d. remote villages

2. According to the passage, what causes traffic congestion in big cities?

a. A lot of city dwellers b. Too many cars on the roads

c. Careless drivers d. Less traffic signs on the streets

3. The high number of cars is caused by_________

a. urban planning b. traffic congestion

c. environmental pollution d. the population

4. The highway and road network is ________ of meeting the requirement of increasing number of vehicles.

a. full b. aware c. incapable d. uncertain

5. Which of the followings is NOT true?

a. Only big cities have the problem of pollution.

b. Traffic jams cause pollution

c. Pollution is a major problem in big cities.

d. Pollution causes health and environmental problems.

1
29 tháng 1 2022

A. Match the words with their meanings.

1. rural a. being too crowded or too full 

2. noticeable b. unable to move

3. congestion c. easy to see or recognize

4. traffic jam d. in the countryside, not in the city

5. stuck e. too many vehicles in one place prevents

D
2C
A
4E
B

B. Choose the correct answers.

1. Where do traffic problems and pollution frequently happen?

a. small towns b. rural areas c. big cities d. remote villages

2. According to the passage, what causes traffic congestion in big cities?

a. A lot of city dwellers b. Too many cars on the roads

c. Careless drivers d. Less traffic signs on the streets

3. The high number of cars is caused by_________

a. urban planning b. traffic congestion

c. environmental pollution d. the population

4. The highway and road network is ________ of meeting the requirement of increasing number of vehicles.

a. full b. aware c. incapable d. uncertain

5. Which of the followings is NOT true?

a. Only big cities have the problem of pollution.

b. Traffic jams cause pollution

c. Pollution is a major problem in big cities.

d. Pollution causes health and environmental problems.

III. Read the text carefully, then do the tasks.Large cities often have problems that small towns and rural areas do not have. Two of the biggest problems are heavy traffic and the pollution that cars create. Of course. Traffic problems and pollution are not only found in big cities. However, the higher populations and larger number of cars on the roads in cities can make the problems happen more often and with more noticeable effects.One of the most common traffic problems the large cities...
Đọc tiếp

III. Read the text carefully, then do the tasks.

Large cities often have problems that small towns and rural areas do not have. Two of the biggest problems are heavy traffic and the pollution that cars create. Of course. Traffic problems and pollution are not only found in big cities. However, the higher populations and larger number of cars on the roads in cities can make the problems happen more often and with more noticeable effects.

One of the most common traffic problems the large cities have is congestion. As the population of a city increases, so does the number of cars on the road. Cities cannot always improve the number and size of their roads and highways to keep up with the number of cars. The result is traffic congestion, or traffic jams.

When traffic jams happen, cars that are stuck in the congestion continue to run their engines. This creates pollution and is a big problems. Pollution causes health problems for the people in cities and also hurts the environment.

 

 

A. Match the words with their meanings.

1. rural a. being too crowded or too full

2. noticeable b. unable to move

3. congestion c. easy to see or recognize

4. traffic jam d. in the countryside, not in the city

5. stuck e. too many vehicles in one place prevents

B. Choose the correct answers.

1. Where do traffic problems and pollution frequently happen?

a. small towns b. rural areas c. big cities d. remote villages

2. According to the passage, what causes traffic congestion in big cities?

a. A lot of city dwellers b. Too many cars on the roads

c. Careless drivers d. Less traffic signs on the streets

3. The high number of cars is caused by_________

a. urban planning b. traffic congestion

c. environmental pollution d. the population

4. The highway and road network is ________ of meeting the requirement of increasing number of vehicles.

a. full b. aware c. incapable d. uncertain

5. Which of the followings is NOT true?

a. Only big cities have the problem of pollution.

b. Traffic jams cause pollution

c. Pollution is a major problem in big cities.

d. Pollution causes health and environmental problems.

1
13 tháng 2 2022

A. Match the words with their meanings.

1 - D. rural a. being too crowded or too full

2 - C. noticeable b. unable to move

3 - A. congestion c. easy to see or recognize

4 - E. traffic jam d. in the countryside, not in the city

5 - B. stuck e. too many vehicles in one place prevents

B. Choose the correct answers.

1. Where do traffic problems and pollution frequently happen?

a. small towns b. rural areas c. big cities d. remote villages

2. According to the passage, what causes traffic congestion in big cities?

a. A lot of city dwellers b. Too many cars on the roads

c. Careless drivers d. Less traffic signs on the streets

3. The high number of cars is caused by_________

a. urban planning b. traffic congestion

c. environmental pollution d. the population

4. The highway and road network is ________ of meeting the requirement of increasing number of vehicles.

a. full b. aware c. incapable d. uncertain

5. Which of the followings is NOT true?

a. Only big cities have the problem of pollution.

b. Traffic jams cause pollution

c. Pollution is a major problem in big cities.

d. Pollution causes health and environmental problems.

III. Read the text carefully, then do the tasks.Large cities often have problems that small towns and rural areas do not have. Two of the biggest problems are heavy traffic and the pollution that cars create. Of course. Traffic problems and pollution are not only found in big cities. However, the higher populations and larger number of cars on the roads in cities can make the problems happen more often and with more noticeable effects.One of the most common traffic problems the large cities...
Đọc tiếp

III. Read the text carefully, then do the tasks.

Large cities often have problems that small towns and rural areas do not have. Two of the biggest problems are heavy traffic and the pollution that cars create. Of course. Traffic problems and pollution are not only found in big cities. However, the higher populations and larger number of cars on the roads in cities can make the problems happen more often and with more noticeable effects.

One of the most common traffic problems the large cities have is congestion. As the population of a city increases, so does the number of cars on the road. Cities cannot always improve the number and size of their roads and highways to keep up with the number of cars. The result is traffic congestion, or traffic jams.

When traffic jams happen, cars that are stuck in the congestion continue to run their engines. This creates pollution and is a big problems. Pollution causes health problems for the people in cities and also hurts the environment.

A. Match the words with their meanings.

1. rural a. being too crowded or too full

2. noticeable b. unable to move

3. congestion c. easy to see or recognize

4. traffic jam d. in the countryside, not in the city

5. stuck e. too many vehicles in one place prevents

B. Choose the correct answers.

1. Where do traffic problems and pollution frequently happen?

a. small towns b. rural areas c. big cities d. remote villages

2. According to the passage, what causes traffic congestion in big cities?

a. A lot of city dwellers b. Too many cars on the roads

c. Careless drivers d. Less traffic signs on the streets

3. The high number of cars is caused by_________

a. urban planning b. traffic congestion

c. environmental pollution d. the population

4. The highway and road network is ________ of meeting the requirement of increasing number of vehicles.

a. full b. aware c. incapable d. uncertain

5. Which of the followings is NOT true?

a. Only big cities have the problem of pollution.

b. Traffic jams cause pollution

c. Pollution is a major problem in big cities.

d. Pollution causes health and environmental problems.

1
16 tháng 2 2022

A. 1D 2C 3A 4E 5B

B. 1C 2B 3D 4A 5C