Transcription of matkas - NCERT
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Example: bachelor of science
matkas - NCERT
You already know that three-fourth of theearth s surface is covered with water, but onlya small proportion of it accounts forfreshwater that can be put to use. Thisfreshwater is mainly obtained from surfacerun off and ground water that is continuallybeing renewed and recharged through thehydrological cycle. All water moves within thehydrological cycle ensuring that water is arenewable might wonder that if three-fourth ofthe world is covered with water and water isa renewable resource, then how is it thatcountries and regions around the globe sufferfrom water scarcity? Why is it predicted thatby 2025, nearly two billion people will live inabsolute water scarcity?
of the people, but, the area still suf fers from water scarcity. This scarcity may be due to bad quality of water . Lately, there has be en a growing concern that even if there is ample water to meet the needs of the people, much of it may be polluted by domestic and industrial wastes, chemicals, pesticides and fertilisers used in agriculture ...
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