Question

71% of the earth is covered by water, but
very little can be used by humans. Why?​

Answer 1

Explanation:

bcoz some are salty water we cannot purified that water thats y i think

Answer 2

In the total water content, about 97% of the Earth's water is the ocean water which is salty. And then around 2% of the water is found in the glacier form and in the form of ice sheets. Because of this, the fresh water content used by humans is very