Question

why is the number of trophic levels in a food chain is limited​

Answer 1

The number of trophic levels in an ecosystem are limited. ... Because the amount of energy flow decreases with successive trophic level, as only 10% of energy is transferred from one trophic level to the next trophic level.

Answer 2

Answer:

This is due to 10% Law.

The energy is transferred from one trophic level to another. During this, 90% energy is lost to the environment and onl 10% of the energy is transferred to the next trophic level.

Since the ampont of energy decreases at every trophic leve, therefore the trophic levels in a food chain does not exceed 4 or 5.

Hope it helps:)

Step-by-step explanation: