Air pollution is the introduction of chemicals, particulate matter, or biological materials that cause harm or discomfort to humans or other living organisms, or damages the natural environment, into the atmosphere. The atmosphere is a complex, dynamic natural gaseous system that is essential to support life on planet Earth. Stratospheric ozone depletion due to air pollution has long been recognized as a threat to human health as well as to the Earth's ecosystems.
An air pollutant is known as a substance in the air that can cause harm to humans and the environment. Pollutants can be in the form of solid particles, liquid droplets, or gases. In addition, they may be natural or man-made.
But, many people are still not clear about what kind of pollutant activity that can produce by human. So, let us bring you to know it.
* 终于看到成果了~ 希望大家会支持吧~因为不止支持我们,也让大家多关注空气污染的问题~
3 comments:
嘿嘿~ 帮你宣传了 XD
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