In a forest ecosystem,green plants are .........

Give any two examples of xerarch succession.

In both hydrarch and xerarch successions,what is the characteristic outcome of the ecological changes?

Composition and structure of communities constantly change in response to the changing environmental conditions. These changes lead finally to a community that is in near equilibrium with the environment and that is called a.......

Consider the following statements about the carbon cycle and choose how many statements are correct?
$(a)$ The atmosphere contains $71\;\%$ of the total global carbon.
$(b)$ Decomposers contribute substantially to the $CO_2$ pool by processing waste materials and dead organic matter from land or oceans.
$(c)$ $4 \times 10^{13}\; kg$ of carbon is fixed through photosynthesis annually.
$(d)$ There is no respiratory input into the atmosphere.
$(e)$ Carbon constitutes $49\;\%$ of the dry weight of organisms.

The entire sequence of communities that successfully change in a given area is called $P$. The individual transitional communities are termed as $Q$.