What are different segments of the earth's environment ?

Explanation

Environment is divided into four segments.
They are 1) Atmosphere 2) Hydrosphere 3) Lithodphere and 4) Biosphere.
1) Atmosphere: The blanket of gases that surrounds the corth is called Atmosphere. It contains large proportions of `N_2" and "O_2` and in small proportions `CO_2`, Water vapour etc. It absorbs the harmful radiations coming from the Sun and plays an important role in maintaining the heat balance on earth.
Hydrosphere: All the natural water resources together constitute the Hydrosphere. It includes oceans, seas, rivers, lakes, streams, reservoirs, polar ice caps and ground water etc.
Four-fifths of the earth's surface is occupied by water. Out of this 97 % is present in the form of sea water and the remaining 3% is in the form of ice in polar ice caps and only very small percentage of water is available for drinking, agriculture and other human purposes.
3) Lithosphere: One-fifth of the total earth surface is in the form of land. Inner layers of earth contain minerals. Deeper inner layers of carth contain natural gas and oil. All these things including hills and mountains come under this segment.
4) Biosphere: All living organisms, trees, plants, animals, and human beings constitute Biosphere. This biosphere is interrelated to other segments of environment. Biosphere is interrelated to other segments of environment. Biosphere is dependent on atmosphere and hydrosphere. Polluted atmosphere stops the plants growth and can create health problems among animals and human beings.