Can somebody tell me?

Producers are the plants ,Consumers are the fishes

Explanation:

why? well because producers are the ones that produce energy and while the consumers are the ones that a living and that move

hello there the answer is d

in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".