Introduction <br />Components of Environment <br />1. Atmosphere <br />The layer of gases surrounds the earth is called Atmosphere <br />Composition of Atmosphere <br />Thickness <br />Good Protector <br />No Life without cases <br />2. Hydrosphere <br />3. Lithosphere <br />4. Biosphere <br />Chapter No 16 <br />Environmental Chemistry <br />chemistry <br />Part 2
