Question : How much of the world's surface is covered by water?
Option 1: 55%
Option 2: 70%
Option 3: 80%
Option 4: 25%
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Correct Answer: 70%
Solution : The correct option is 70% .
Water constitutes 96.5% of the Earth's total volume, covering approximately 71% of its surface. Beyond oceans, water exists in various forms—rivers, lakes, icecaps, glaciers, and water vapour in the air. Glaciers are the largest source of fresh water. This critical resource plays a vital role in sustaining life and ecosystems.
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