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Define the water source? What is known as water source?

The total range of natural waters present on earth and  that are of potential use to human beings.  It may occur in  the form of liquid, vapour or solid . These resources include rivers, lakes, underground water, oceans, snow fields, glaciers, etc.Water covers 71% of earth’s surface and is vital for all forms of life on it. 1.6% of water is below the ground in aquifers and 0.001% is present in air as vapour, perspiration and clouds. 0.6% of water is present on land’s surface in  the form of rivers, lakes and ponds. Glaciers and polar ice caps cover 2.4%. 97% , the largest part of surface water is in form of oceans.


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