By inference of reading this chapter, it can be concluded that biological water (water in living organisms) constitutes what percentage of water in the Earth system?
A) much less than 1%
B) 10%
C) 20%
D) 30%
E) impossible to estimate

Question

Quizplus · Accepted Answer

While the exact percentage is not stated in the chapter, the author makes multiple references to the small amount of water that is available for biological use and the fact that the majority of water on Earth is contained in oceans, which organisms cannot utilize. Therefore, option A, "much less than 1%," is the best choice.

By Inference of Reading This Chapter, It Can Be Concluded