The transfer of energy from organisms to organisms in a natural community establishes

The driving force of an ecosystem is

Which of the following is $\text{NOT}$ recycled in an ecosystem?

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.

In tropical rain forests,most of the energy in the ecosystem flows through:

$A$ food chain is a series of populations that starts with producers. It is concerned with: