Give scientific reasons for the following statements:
Variation is necessary for the maintenance of existence of any species.

Explanation

Specific species or its population live in the particular environment or habitat which is suitable to them.
`rarr` There are changes taking place on earth e.g., fluctuation in temperature, variation in the water level, etc.
`rarr` Organisms possesing variations get a chance to survive in the changing environment.
`rarr` Due to variation, organisms can adapt to the environment and hence they can exist through adaptations.
`rarr` With the help of variation geographical distribution of organisms increase.
Hence, variation is necessary for the maintenance of existence of any species.