If all the plants of the world die all the animals will also die due to shortage of

Vegetable eating person acts as

Which of the following abundantly occurs in pond ecosystem

How many sentence are correct?

$(1)$ The trophic levels in $GFC$ are unlimited

$(2)$ Organisms at each trophic level depend on those at the higher trophic level for their energy demands.

$(3)$ Plants capture only $2 -10$ percent of $PAR$.

$(4)$ All organisms are dependent for their food on producers, either directly or indirectly.

Food levels in an ecosystem are called

Name an organism found as secondary carnivore in an aquatic ecosystem.