Generally the food chain has how many trophic levels

A food chain has a few trophic level.

why food chain has only a few trophic levels.

A food chain can have trophic levels

(a) Define trophic level. Draw the food chain with four trophic levels. (b) What will happen if we kill all orgainsms in one trophic level ?

Explain food chain and trophic levels.

A: Decomposerws are excluded form the food chains. R: They act on all trophic level of a food chains.