10
QuizMultiple Choice

The Importance of Water — Quiz

Question 10 • Biology

Which statement best explains why water is essential for all living things?

Answer
A
Water is an essential component of blood.
B
Water makes up 65 percent of human beings.
C
Water is necessary for cellular functions.
D
Water covers 75 percent of Earth’s surface.

Explanation

Water is needed for many processes that happen inside cells, including chemical reactions and transporting substances. That makes it essential for living things generally. Water is part of blood and makes up much of the human body, but those facts do not explain as broadly why all living things need it.

AI-written and checked against the verified answer.