What are trophic levels? Give an example of a food chain and state the different trohphic levels

Explanation

The various steps in food chain at which transfer of food energy takes place are called trophic levels. Ex: Food chain operating in a grass land
Grass `to` insects `to` frogs `to` snakes
1) Grass ` to ` 1st trophic level .
2) Insects `to` 2nd trophic level.
3) Frogs `to` 3nd trophic level.
4) Birds of snake `to ` 4th trophic level .