(Q2) LS - Evolution by Natural Selection

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What is Natural Selection?

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Natural Selection is the process by which populations of organisms with variations that help them survive in their environment live longer, compete better, and reproduce more than those that do not have the variations.

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Why do Galapagos tortoises look different?

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The differences in appearance among Galapagos tortoises are primarily due to differences in food supply.

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What does Darwin's theory of evolution suggest?

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Darwin's theory of evolution suggests that species change over time.

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Why do some organisms resemble others?

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Some organisms look like other organisms because nature selects for those traits.

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Who decides who survives in Natural Selection?

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Nature decides who survives and who doesn't in Natural Selection.

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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 a mutation?

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A mutation is a change in the DNA sequence that can lead to variations in traits among organisms.

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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 role of competition in Natural Selection?

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Competition for resources leads to the survival of the fittest, where only those best adapted to their environment survive.

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What is speciation?

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Speciation is the process by which new species arise from existing species.