Question

1. which ecosystem in north america plays a critical role in flood control and water filtration?

a. grasslands

b. boreal forests

c. deserts

d. wetlands

Explanation:

Wetlands act as natural sponges, absorbing excess water to reduce flooding. They also filter pollutants and sediments from water as it passes through, improving water quality. Grasslands are more for grazing and soil conservation, boreal forests for carbon storage and wildlife, and deserts have limited water retention/filtration roles.

Answer:

d. Wetlands