Question

food chain is incomplete. two groups of organisms are missing.
evaluate the model to determine the other two missing groups and explain their role in the ecosystem.
a predators that prey on all other levels of consumers.
b decomposers that recycle matter back into the food chain.
c producers that make the energy available to consumer organisms.
d carnivores that eat only meat and form the top of the food chain.
e herbivores that eat plants and pass energy and matter on to higher levels.

Explanation:

A complete food chain requires producers (to create energy via photosynthesis) as the base, and decomposers (to recycle nutrients from dead organisms back into the ecosystem). The given chain only has consumers (fly, trout, bear), missing these two critical groups. Option C describes producers, and Option B describes decomposers.

Answer:

B. Decomposers that recycle matter back into the food chain., C. Producers that make the energy available to consumer organisms.