Question

What % of water is potable water on Earth?

• A. 0.3%
• B. 1%
• C. 3%
• D. 10%

Hint:

Keep in mind the vast disparity between total water and usable, potable water when considering global water resources.

Answer 1

The Correct Option is C

Step 1: Water distribution on Earth.
Water covers about 71% of the Earth's surface, but only 3% of this is fresh water, which includes potable water. Step 2: Potable water percentage.
Out of the 3% of fresh water, only a fraction is accessible and clean enough for human consumption, but 3% is the total proportion of water on Earth that can be considered potable. Step 3: Conclusion. Therefore, the correct answer is that 3% of the Earth's total water is potable.