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Question 2

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

Answer

Variations are beneficial to the species than individual because during certain environmental conditions their is so drastic change that their survival  of species becomes difficult. For example, if their is sudden rise in temperature of water, then most of the bacteria living in that water would die. So only few variants that can resistant to heat would be able to survive. However, if these few variants were not there, then the entire species of bacteria would have  destroyed. Thus, these variants help in the survival of the species.So all variations are not necessarily beneficial for the individual organisms.

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