How much of the world's water is estimated to exist as freshwater?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 2.5%.
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Freshwater constitutes approximately 2.5% of the total water on Earth.
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The total volume of water on Earth is about 1.386 billion km³ (333 million cubic miles).
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Of this, 97.5% is saltwater, and 2.5% is freshwater.
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Only 0.3% of freshwater exists in liquid form on the Earth’s surface.