Question
The main source of usable water on the Earth is
Answer: Option A
Answer: (a)
Even though most of the Earth's surface is water, only 1% of it is fresh usable water. Ninety-seven per cent of the Earth's water is saltwater, which contains too many minerals for humans to use untreated.
Two per cent of our water is 'locked up' in ice caps and glaciers, leaving only one per cent as usable freshwater. Groundwater comprises 0.62 per cent of water, followed by Freshwater Lakes: 0.009 per cent; and rivers: 0.0001 per cent.
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Answer: (a)
Even though most of the Earth's surface is water, only 1% of it is fresh usable water. Ninety-seven per cent of the Earth's water is saltwater, which contains too many minerals for humans to use untreated.
Two per cent of our water is 'locked up' in ice caps and glaciers, leaving only one per cent as usable freshwater. Groundwater comprises 0.62 per cent of water, followed by Freshwater Lakes: 0.009 per cent; and rivers: 0.0001 per cent.
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