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Environmental Chemistry, , © It is the branch of chemistry which deals, with the chemicals and other pollutants in, the environment resulting directly and, indirectly from human activities.
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Atmosphere, , ° Our surrounding on earth is called atmosphere. It consists of gases ie. N;, O,, CO, He, Ne, Kr, Xe,, and water vapors., , © Its thickness is about 1000 Km above the surface of earth., , © The gases present in atmosphere are very important in the following ways:, © These gases absorbs harmful radiations of sun to protect life on earth., © N, is used by nitrogen fixing bacteria., © O, is required for respiration., © CO, is necessary for photosynthesis., ° Water vapors are responsible for sustaining life on earth.
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Smog, , © Itis a combination of smoke and fog., © The smog is of two types:, , © Reducing smog, , © Oxidizing smog
