Distribution of organisms in different parts is

What are the two main components of an ecosystem? Discribe the physical factors which affect the distribution of organisms in different habitats.

Why does a pond possess different species of organisms in the different parts?

The distribution of electrons into different orbits of an atom, as suggested by Bohr, is

Ecologically, the most important factor that controls the distribution of organism on Earth is

Ecologically, the most important factor that controls the distribution of organism on Earth is

Vertical distribution of different species occupying different level _____

Vertical distribution of different species occupying different levels in dense vegetation is called