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Which of the following types of stars are dim but can have high surface temperatures? giants main sequence stars supergiants dwarfs

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

This is the interaction of two organisms where one is and the other is neither nor harmed.