Question

Which statement explains how a stable ecosystem can exist even while thepopulations in it vary over time?A. Less rain one year will cause populations to decrease due to alack of food, and populations will stay at this reduced size evenwhen rain returns.B. If individuals in a population cannot find shelter, they will use newabiotic factors for shelter so the population can continue to grow.C. If a disease spreads through a population that has a lot of geneticvariation, resistant individuals will survive and the population willrecover.D. If a prey population grows, it will decrease the size of the predatorpopulation because the predators will have less competition forfood.

Answer 1

When we speak about stability, we refer to the tendency of an ecosystem to maintain the supply of its ecosystem services in the long term, such as food production, carbon sequestration and soil fertility.

The correct option is

C. If a disease spreads through a population that has a lot of genetic

variation, resistant individuals will survive and the population will

recover.

I would say that in this option there is a variation of the population over time (there is a disease that has a negative effect, causing several individuals to die and there is a reduction in the population). But in turn, genetic variability is what allows some adapted individuals to survive and return to the initial number of the population, achieving stability in the ecosystem.