Penguins are found in:

Given below are two statements:
Statement $I$: Stenohaline animals tolerate a wide range of salt concentration.
Statement $II$: Euryhaline animals are capable of handling a narrow range of salt concentration.
In the light of the above statements,choose the most appropriate answer from the options given below:

The part of the earth where life exists is made up of:

Explain how ecology is related to an organism?

Just as a person moving from Delhi to Shimla to escape the heat for the duration of hot summer,thousands of migratory birds from Siberia and other extremely cold northern regions move to:

How is a biological community formed?