The process of evapo-transpiration and precipitation is known as

Which of the following has the largest population in a food chain?

The equilibrium of the species is disturbed by

Which of the following statements is incorrect regarding the phosphorus cycle?

Biological equilibrium is found among the

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 . . . . . . .