Question

examine the food chain of an area to answer the question. which organism should be added to the food chain to show the complete transfer of energy, and why? tigers: they are consumers that feed on oak trees, insects, and owls. fungi: they are decomposers that return the nutrients from all of the organisms to the oak trees. hawks: they are consumers that only feed on owls. earthworms: they are decomposers that return nutrients only from the insects to the oak trees.

Explanation:

In a food - chain, decomposers are essential to complete the energy transfer. Fungi are decomposers that break down dead organisms (plants and animals) and return nutrients to the soil, which are then taken up by plants like oak trees. This closes the loop of energy and nutrient cycling. Tigers are not part of this local food - chain as they don't feed on oak trees, insects, and owls in this context. Hawks are just consumers that would be an additional predator in the chain but don't complete the energy transfer like decomposers do. Earthworms are decomposers but only mentioned to return nutrients from insects, while fungi can handle all organisms in the chain.

Answer:

Fungi; they are decomposers that return the nutrients from all of the organisms to the oak trees.