Question

how does the creation of variation in a species ensure its survival?​

Answer 1

Evolution and Adaptation to the Environment. Variation allows some individuals within a population to adapt to the changing environment. ... Some new alleles increase an organism's ability to survive and reproduce, which then ensures the survival of the allele in the population.

Answer 2

All the variations in the species do not have equal chances of survival in the environment. The survival of the variations depends upon the nature of variation. Different individuals have different chances. Selection of variants by environmental factors forms the basis for evolutionary processes.These variations may lead to increased survival advantages of the individuals due to positive adoption of traits or may merely contribute to the genetic drift