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Question
Give reasons.
The quality of water is deteriorating.
Solution
Though three-fourth of the Earth’s surface is covered with water, almost 98% of it is unfit for use. Oceans and seas, which constitute the major portion of the hydrosphere, contain saline water. The freshwater reserves of the Earth are mostly made up of ice-caps, groundwater, lakes, and rivers. The quantity of water on Earth remains the same. It constantly changes form and circulates between oceans, atmosphere, and land. Considering that the freshwater reserves remain constant and that the world population rises day-by-day, it is important that we use these water resources judiciously. However, due to factors like deforestation, industrial and agricultural pollution of rivers and lakes, wastage of water, pollution of groundwater, etc., the quality of water that is available to many people in this world today is not suitable for human consumption.
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