In each local environment, living organisms have evolved to possess the traits necessary to survive and reproduce. This concept is called

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Natural selection is the process by which organisms with certain traits are more likely to survive and reproduce than those without those traits in a given environment. This results in the evolution of a population over time as the advantageous traits become more common. Genetic drift and the bottleneck effect are random fluctuations in allele frequencies in a population, while microevolution refers to small-scale evolutionary changes within a population, and antigenic shift is a specific type of genetic change in viruses. None of these concepts fully explains how living organisms adapt to their local environments in the same way that natural selection does.

In Each Local Environment, Living Organisms Have Evolved to Possess