Jumping worms affect populations in forest ecosystems by directly competing with native

A. primary consumers.
B. secondary consumers.
C. decomposers.
D. producers.

C. decomposers.

Jumping worms are known to consume large amounts of organic matter in the soil, which can disrupt the balance of nutrients in the ecosystem and impact the ability of native decomposers to break down organic material. This can have far-reaching effects on the health and functioning of the forest ecosystem as a whole.