What do producer, consumer and decomposer have on common?

Producers can make their own food by capturing the sun's energy, but consumers and decomposers can't. Consumers need to eat other organisms to obtain energy. Decomposers are like the recyclers of nature. They obtain energy for their own needs while returning simple molecules to the environment.

Explanation:

uncle sam would be tossing and turning in his grave : *)

the answer is aristophanes comedies.