Question

Why does the food chains generally consists of only 3 or 4 steps?

Answer 1

see the answer in image

Answer 2

Answer:

A food chain’s length is restricted to just 3 or 4 steps due to energy loss. Moreover, the energy added to the biomass of each trophic level is significantly lower than the one preceding it. This occurs as a result of material wastage from subsequently trophic levels and for the maintenance of various life processes. Consequently, the shorter the food chain, the more energy that is available to the final consumer. A shorter food chain is also considerably more efficient as less energy is lost.

Explanation: