$Mr. X$ is eating curd. What is his trophic level in the food chain for this food?

Fill in the blanks.
$(a)$ Plants are called as . . . . . . because they fix carbon dioxide.
$(b)$ In an ecosystem dominated by trees,the pyramid (of numbers) is . . . . . . type.
$(c)$ In aquatic ecosystems,the limiting factor for the productivity is . . . . . . .
$(d)$ Common detritivores in our ecosystem are . . . . . . .
$(e)$ The major reservoir of carbon on earth is . . . . . . .

The components of an ecosystem include .......... .

$A$: The soil of tropical rain forests has a low base content.
$R$: Such soil shows less percolation and leaching.

Which of the following represents a tertiary consumer and a secondary consumer,respectively?

The equilibrium of the species is disturbed by