Question

Food chains and webs not only describe the order in which organisms are eaten, but they also describe the _____.

Answer 1

Answer:

Option A, flow of energy in an ecosystem

Explanation:

The producers lie at the base of all food webs or food chains. Thus, it has 100% of energy. Now a consumer lying at trophic level I will get its food from producer. The food shall provide nearly 10% of the total energy of producers to the consumers at trophic level 1. Likewise all the subsequent trophic levels will receive nearly 10% of the energy contained within the organism lying at precedent trophic level.  

Hence, in this way a food chain or food web also describes the movement of energy from one organism to other.  

Hence, option A is correct

Answer 2

Food chains and webs not only describe the order in which organisms are eaten, but they also describe the flow of energy in an ecosystem ...

Hope it heps !!!