Question

kevin is constructing an explanation of the importance of freshwater ecosystems. which of these statements would be most useful to include in the explanation?
a freshwater ecosystems are distributed evenly across a continent.
b freshwater ecosystems hold less than 3 percent of earth’s surface water.
c freshwater ecosystems keep fresh water in one place, and do not release it.
d freshwater ecosystems stay about the same during the year.

Explanation:

Freshwater ecosystems holding less than 3 percent of Earth's surface - water highlights their relative scarcity and thus importance. Option A is incorrect as they are not evenly distributed. Option C is wrong since freshwater is part of the water - cycle and is not held in one place. Option D is inaccurate as freshwater ecosystems can change seasonally.

Answer:

B. Freshwater ecosystems hold less than 3 percent of Earth’s surface water.