Question

The total earth’s surface covered by water is

• A. $75\%$
• B. $60\%$
• C. $85\%$
• D. $50\%$

Answer 1

The correct option is A

$75\%$

Explanation:

Distribution of water by Earth's surface:

• The total earth’s surface covered by water is about $75\%$.
• Water also exists in the air as water vapor, as well as in rivers, lakes, in the ground as soil moisture and in aquifers, and even in humans and animals.
• Water is a compound that is composed of hydrogen and oxygen atoms.
• The chemical formula of water is ${\mathrm{H}}_2\mathrm{O}$.

Hence, the correct option is A. The total earth’s surface covered by water is $75\%$.