Answer:
An example of macroevolution is the evolution of a new species. One mechanism that drives evolution is natural selection, which is a process that increases the frequency of advantageous alleles in a population. Natural selection results in organisms that are more likely to survive and reproduce.
Birds living in a given area birds are multiplier with each other, but long migrate causes some birds (mostly young birds) to settle new areas. This birds make a new generation which he has a new base a genetic squad.
