71% of the earth is covered by water,but very little can be used by humans.why?
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Bcoz most of the water is in the oceans which is saline and cannot be brought into human use
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The reason is a little amount of fresh water which is suitable for human consumption is present on earth .and rest major part of water contained in oceansand sea which are highly saline and not fit for consumption.
The percentage of the fresh fit for used by humans and other species for drinking is just about 2% only.
Rest all water contained in in the oceans or in polar regions in the form of glaciers.
Some portion of ground water is in located very deep of the earth surface.and is difficult to access.
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