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NL
19 tháng 1 2018
Air pollution is now a serious problem for those living in big, congested, industrialized cities with heavy vehicular traffic.
Air pollution may be defined as the occurrence of any foreign materials or gases such as oxides of carbon, sulphur and nitrogen in the air beyond prescribed limit, which are harmful for man, vegetation, animals or buildings.
The major gaseous pollutants of air are carbon monoxide, oxides of nitrogen and sulphur, hydrogen sulphide, fumes of acids, paints, smoke etc. Major solid pollutants of air are dust particles, of un-burnt carbon, lead, cement and asbestos.
LN
0
16 tháng 2 2021
viết định nghĩa, nguyên nhân, ảnh hưởng, giải pháp het roi ah
HT
0
HT
0
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1
QN
29 tháng 5 2019
Essay on Water Pollution – Essay 2 (250 Words)
Introduction:
The consumption of water forms a large part of our physical health. Aside from this obvious fact, water is an important aspect of our ecosystem. However, for water to perform its various functions, it has to be kept pure as contaminated water would lead to adverse environmental and health consequences.
Water pollution is the introduction of foreign material into our water bodies like lakes, streams, rivers or groundwater. This introduction, 9 times out of 10 is usually a result of human interference. Through various activities, sometimes inadvertently, we pollute our ecosystem with toxic materials dumped into our water.
Causes of Water Pollution:
One of the most popular features of water is also the cause of water pollution. Water is a “Universal Solvent” which simply means that it can dissolve almost any substance. Consequently, it is also why toxic substance mixes with water effortlessly. These toxic materials could be from traceable sources such as factories, farms, sewage etc. They are sometimes less traceable sources such as pollution in the air.
Water Pollution Effect on our Environment:
The first organisms that come in contact with polluted water are creatures living in the water. The effect of water pollution on aquatic animals depends on the kind of material introduced into the water. In extreme cases, it can lead to death of aqua species. It can also lead to a serious disrupting of the food chain. Finally, water pollution can lead to serious diseases in humans such as cholera and hepatitis.
Preventive Measures:
While the obvious way to reduce or eliminate water pollution is to stop industrial waste, doing just that and nothing more would not be enough. Preventive measures such as reduction in plastic consumption, controlling leaks in cars, using fewer pesticides or efficient disposal of chemicals would help us go the extra mile.
NT
1
24 tháng 7 2018
My hometown changes so much. The first change is life of local people. They have a better life because they have electricity, TV, hospital, schools nearby the village. The second change is the peopleắ There are more people and more houses here. The houses are more modern in brick not by soil anymore. The last change is the place for children to play. There is a park in the village.
GP
2
14 tháng 7 2018
I live in a mountainous village. My parents often tell me stories about their life in the past. It’s not much like the village I can see nowadays. Some villagers now live in brick houses instead of earthen ones. Our houses are better equipped with electric fans and TVs. Thanks to the TV, we now know more about life outside our village. We don’t use oil lamps any more. We have electric lights which are much brighter. More villagers are using motorcycles for transport instead of riding a horse or walking. We — village children — no longer have to waik a long way and cross a stream to get to school, which is dangerous in the rainy season. Now there’s a new school nearby. We also have more visitors from the city. They come to experience our way of life.
24 tháng 7 2018
My hometown changes so much. The first change is life of local people. They have a better life because they have electricity, TV, hospital, schools nearby the village. The second change is the peopleắ There are more people and more houses here. The houses are more modern in brick not by soil anymore. The last change is the place for children to play. There is a park in the village.
HT
1
16 tháng 1 2020
Air pollution is a change in the composition of air. Mainly due to smoke, dust, vapors or toxic gases that cause climate change, adversely affect human health or may damage the natural environment of many other species.
Air pollution is the cause of the risk of stroke, neurasthenia, cardiovascular disease, cancer, and a range of respiratory diseases such as asthma, pneumonia, even lung cancer is increasing. .
Air pollution is divided into two types, including outdoor air pollution and indoor air pollution. In particular, outdoor air pollution is a major factor causing serious impacts on the environment and human health in developed and developing countries. The cause of pollution comes from various sources such as traffic emissions, industrial plants, from agricultural production and some natural causes such as forest fires, desert dust, volcanoes.
Besides, we also face indoor air pollution. Pollution sources include cigarette smoke, charcoal, wood, chemicals in paint or cleaning products, air-conditioning gases and some substances in construction materials.
