Pls help, this is science btw. If the lionfish population keeps Rising, what would be the possible effect on the trophic levels of the ecosystem?

During a fierce storm a large number of tall trees on an island are uprooted by the wind and die. most of the trees on the island are now short trees and produce seeds that grow into short trees. what concept is shown in this example? question 5 options: natural selection artificial selection genetic engineering gene splicing