During ecological succession, how does the growth of young hardwoods affect the organisms living

in an ecosystem?

A Grasses and low shrubs are

unable to obtain the amount of light they need to

survive, so there are small numbers of them.

B The trees provide shelter and food for a variety of mammals, insects, and

birds.

C In autumn, falling leaves provide a source of energy for decomposers such as

fungi.

D. All of the above