Question

freshwater ecosystems include three general categories: rivers and streams, lakes and ponds, and freshwater wetlands. which of the following describes freshwater wetlands, but not the other two categories? select all correct answers.
a the ecosystem soaks up heavy rainfall, which helps to prevent flooding.
b. water flows in one direction only through the ecosystem.
c. water may cover the soil or lie just under the surface, for at least part of the year.
d. the ecosystem may be a freshwater bog, a marsh, or a swamp.

Explanation:

• Option A: Freshwater wetlands act as natural sponges, soaking up heavy rainfall and reducing flood risks, which is a unique characteristic compared to some rivers/streams and lakes/ponds that may not have the same water - retention capacity in the same way.
• Option B: This describes rivers and streams (unidirectional water flow), not a characteristic specific to freshwater wetlands.
• Option C: Water covering the soil or being just below the surface for part of the year is a key feature of freshwater wetlands, differentiating them from some other water - bodies.
• Option D: Freshwater bogs, marshes, and swamps are types of freshwater wetlands, making this a characteristic specific to them.

Answer:

A. The ecosystem soaks up heavy rainfall, which helps to prevent flooding.
C. Water may cover the soil or lie just under the surface, for at least part of the year.
D. The ecosystem may be a freshwater bog, a marsh, or a swamp.