Why is it that some organisms do not appear to be perfectly adapted to their environment?Multiple choice question.Because natural selection always proceeds from simpler to more complex organisms and as complexity increases, adaptation becomes more difficult.Because natural selection can only work on the variation present in a population.Because humans have influenced the evolution of almost all living things by artificial selection, making some of them less adapted.

Small populations of organisms are less likely to survive changes in the environment becauseA.individuals cannot find mates in such small populations.B.mutations do not occur in small populations.C.there is not sufficient variation in the gene pool of the population to ensure that some members are better adapted in the new environment.D.natural selection only applies to very large populations.

Organisms that are more adapted to their environment are more likely to survive and pass on the genes that aided their success. This process causes species to change and diverge over time.

Which statement accurately describes the adaptations that result from natural selection.Multiple choice question.Natural selection does not always produce perfectly working adaptations, because it can only work on the genetic variation present in a population.Natural selection always produces perfectly working adaptations, because mutations will sooner or later provide the necessary variation for an adaptation to arise.Natural selection always produces perfectly working adaptations, because it has millions of year to work.

The most essential element in natural selection is ______.Multiple choice question.a society increasing the amount and quality of agriculture---socializationa species changing the environment to reflect genetic variation---accommodationan individual being born into the "right" family---elitisma species adapting to the environment through random genetic variation---adaptation

Darwin noted that natural selection occurs becauseMultiple choice question.the sick and weak individuals in a population pass on their traits at the same rate as the healthy.adaptive traits that are heritable can pass to offspring and increase their survival and reproduction.an individual can adapt their behavior or morphology in their lifetime and pass the adaptation on to their offspring.resources are so abundant in a population that competition is not a part of natural systems.