Question

In the following food chain, plants provide $500J$ of energy to rats. How much energy will be available to hawks from snakes?
$Plants\to Rats\to Snakes\to Hawks$

Answer 1

The energy transfer in a food chain states that only 10 percent of energy is transferred from one trophic level to next and remaining lost by the metabolic process. So, 500 J from plants to rats and then 50 J to snakes and 5 J to the hawks. Thus, the hawks will have 5 J of energy.