Comment on the following figure: I, II and III, A, B, C, D, G, P, Q, R, S are species.

Explanation

Figure I It is a single population and all individuals are of the same species, i.e., a individuals interact among themselves and their environment intraspecific interaction.
Figure II It is a community and it contains three populations of species A, B and C. They interact with each other and their environment and is called interspecific interaction.
Figure III It is a biome. It contains three communities of which one is in climax and other two are in different stages of development. All three communities are in the same environment and they interact with each other and their environment.