Question

variation is important for survival of the species justify?​

Answer 1

Answer:

it is because some times for a species the environmental condition change so drastically that their survival becoms difficult

Answer 2

Sometimes, the environmental conditions change so drastically that the survival of the species becomes difficult. For example, if the temperature of water increases suddenly, then most of the bacteria living in that water would die. Only few variants that are resistant to heat would be able to survive. In the absence of these variants, the entire bacterial species would have been destroyed. Thus, these variants help in the survival of the species.

Variations bring heterogeneity in the population and provide the raw material on which natural selection operates. This results in increase in gene frequency of useful genetic variability. This finally leads to speciation and in turn, helps in evolution. Therefore, in the long run, variations that confer advantage to an individual organism will have better chances of survival in a population.