Evolution Review

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What is variation in the context of evolution?

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Variation refers to the genetic differences between organisms of the same species, which can lead to different traits and adaptations.

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What does extinction mean?

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Extinction is the disappearance of a species from Earth, meaning that no individuals of that species remain.

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What is evolution?

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Evolution is the process by which species change over time through adaptations and natural selection.

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What is a common ancestor?

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A common ancestor is a species from which two or more different species have evolved.

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What can fossils tell us about the age of species?

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Fossils found in different rock layers can indicate the relative ages of species, with deeper layers generally being older.

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What is adaptation?

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Adaptation is a change in a species that enhances its ability to survive and reproduce in its environment.

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What is natural selection?

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Natural selection is the process where organisms better adapted to their environment tend to survive and produce more offspring.

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What is the significance of genetic variation?

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Genetic variation is crucial for a population's ability to adapt to changing environments and resist diseases.

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What is the difference between migration and extinction?

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Migration is the movement of individuals from one location to another, while extinction is the complete loss of a species.

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How do environmental influences affect evolution?

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Environmental influences, such as climate and food availability, can drive evolutionary changes by favoring certain traits.