Write note on Trophic level

Name any two organisms which can occupy more than one trophic level in an ecosystem.

Which one of the following animals may occupy more than one trophic level in the same ecosystem at the same time?

The loss of energy as one proceeds from one trophic level to the next trophic level is approximaetely

Approximately what amount of energy is available to one trophic level from one trophic level lower to it?

The number of trophic levels in an ecosystem are limited. Comment .