How does genetic variation make a community more stable? Include explanations of how genetic variation is related to the struggle to survive, differential reproductive success, heredity, natural selection, and evolution

If you have genetic variation then a community is more likely to survive because the population is more likely to have individuals who are fine if there are environmental changes. Then natural selection will happen and the species will evolve to he adapted to the new environment. If everyone in a population has the same genetics, than one thing could take them all out.