人类当然也对个体动物的适应性带来了影响。
Humans certainly do influence the fitness of individual animals.
动物行为学是与动物的适应性，或行为上的生存价值及进化史方面的研究有所关联。
Ethology is concerned with the study of adaptive, or survival value of behavior and its evolutionary history.
人类还可以通过改变或者破坏某一动物的自然生存环境，间接影响个体动物的适应性。
Humans can also affect the fitness of individual animals indirectly by changing or destroying an animal's natural environment.
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