Variations are beneficial to the species than individual because sometimes for a species,
the environmental conditions change so drastically that their survival 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. However, if these variants were not there, then the entire species of bacteria
would have been destroyed.
Thus, these variants help in the survival of the species. However, all variations are not
necessarily beneficial for the individual organisms.
