Evolution and Natural Selection

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What is speciation?

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The formation of new species.

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How can a theory be best described?

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A theory incorporates facts, laws, inferences, observations, and hypotheses.

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What is natural selection?

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Natural selection is the process where variation exists among a species, variations can be passed down to offspring, and more offspring are produced than can survive.

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What does extinction mean?

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Extinction occurs when every organism of a species has died.

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What did Darwin observe about the finches on the Galapagos Islands?

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Darwin observed that variations in the finches' beaks were useful for gathering food.

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What is evolution?

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Evolution is the change in the heritable characteristics of biological populations over successive generations.

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What is the role of variation in natural selection?

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Variation among individuals in a species is essential for natural selection to occur.

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What is adaptation?

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Adaptation is a trait that helps an organism survive and reproduce in its environment.

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What is the significance of genetic variation?

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Genetic variation is important for a population's ability to adapt to changing environments.

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What is artificial selection?

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Artificial selection is the process by which humans breed plants and animals for particular traits.