文档介绍：该【Air-pollution-(空气污染课件) 】是由【可爱的嘎嘎】上传分享，文档一共【13】页，该文档可以免费在线阅读，需要了解更多关于【Air-pollution-(空气污染课件) 】的内容，可以使用淘豆网的站内搜索功能，选择自己适合的文档，以下文字是截取该文章内的部分文字，如需要获得完整电子版，请下载此文档到您的设备，方便您编辑和打印。Air Pollution
Keyspeaker
2021/10/10
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Introduction
We all know that clean air is important to good health. Wherever you go and whatever you do, you are always surrounded by a sea of gases that we call air. If there are impurities(杂质) in the air, they may be absorbed by our bodies and make us ill. We need clean air, but unfortunately, air pollution is globally present, especially in cities.
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Air Pollution
Industry waste gas
Nuclear explosion
Waste gas of cars
and so on
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How the polluted air do harm to us?
the body directly through our respiration(呼吸)
into the body with the food we eat
to the body through touching or
stimulating our skin (most)
When it access to our body
it could damage our health!
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We couldn’t imagine how can we survive
in these circumstance.
Look at these
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Air pollutants such as nitrogen dioxide and sulphur dioxide also have harmful effects on natural ecosystems.
They can kill plants and trees by destroying their leaves, and can kill animals, especially fish in highly polluted rivers.
ACID RAIN
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Look this children!Their eyes are filled with hope!
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Look at their eyes ….
How poor…
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On the whole, the elimination（排除） of air pollution needs the co-efforts（努力） from the government, the public and the environments. This problem will be solved only with the help of science and technology.
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