Jawapan

2016-07-24T14:37:03+08:00
Air pollution is the presence of harmful foreign substances (pollutants) in the atmosphere, emitted by both natural and anthropogenic (human activity) sources. For example, the emissions from industries and motor vehicles pollutes the air to an extent that causes damage to living organisms. Pure air is necessary for our health. Air pollution is the leading cause of several diseases. During the past few years, air pollution has emerged as one of the leading causes of death worldwide.
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