Why is variation beneficial to the species but not necessarily for the individual?

Explanation

A species encompasses a large number of individuals. Each individual may have specific type of variations of different nature. These variations are beneficial to the species than individual because sometimes for a species, the Scan to know environmental conditions change more about so radically that their survival this topic becomes difficult. For example, if the temperature of water increases suddenly, then most of the bacteria living in that water would die. NCERT 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.