The number of trophic levels in a food chain is limited to $4$ or $ 5$ because
The amount of food produced by producer is limited
Consumer’s demand is high
$90\%$ of the food is lost as heat at each transfer between trophic levels
Activity of decomposer is poor
Assertion : A network of food chains existing together in an ecosystem is known as food web.
Reason : An animal like kite cannot be a part of a food web.
What do ecologists call the transfer of energy that begins with the sun and passes from one organism to the next in a food chain?
The food chain which begin with dead organic matter is called
Word detritus includes