Life Science Review

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What is natural selection?

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

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What is the role of predators in an ecosystem?

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Predators help control the population of prey species, maintaining a balance in the ecosystem.

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What is adaptation in living organisms?

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Adaptation is a characteristic that improves an organism's ability to 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 and resist diseases.

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What is a food chain?

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A food chain is a linear sequence of organisms through which nutrients and energy pass as one organism eats another.

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What is the difference between a food chain and a food web?

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A food chain shows a single pathway of energy flow, while a food web shows multiple interconnected food chains in an ecosystem.

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What is the function of a beak in birds?

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A beak is adapted to help birds eat specific types of food, which varies among species.

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What is the concept of a common ancestor?

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

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What is the geological time scale?

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The geological time scale is a system of chronological dating that relates geological strata to time.

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What is the importance of fossils in understanding evolution?

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Fossils provide evidence of past life forms and help scientists understand the process of evolution.

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