What is the role of the beaver in its ecosystem?



a
It is a keystone species that modifies its natural environment by damming streams to form wetlands.
b
It is a dominant species, as it has the greatest number of individuals among all the mammalian species of its ecosystem.
c
It is a foundation species and the main source of food for the natural predators of its ecosystem.
d
It is an endangered species as it has the least number of individuals among all the mammalian species of its ecosystem.

a. It is a keystone species that modifies its natural environment by damming streams to form wetlands.

Beavers play a crucial role in their ecosystem by creating wetlands that provide habitat for a wide variety of plant and animal species. These wetlands also help to regulate water flow, reduce erosion, and improve water quality in the surrounding area. The presence of beavers can have a significant impact on the overall biodiversity and health of an ecosystem.