Evolution & Natural Selection

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What is Variation in the context of evolution?

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Variation refers to the differences in traits among individuals of the same species, which can affect their survival and reproduction.

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What is the Fossil Record?

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The Fossil Record is the collection of all known fossils, which provides evidence of the history of life on Earth and shows how species have changed over time.

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What is Natural Selection?

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Natural Selection is the process by which organisms with advantageous traits are more likely to survive and reproduce, leading to the gradual evolution of species.

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What is Extinction?

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Extinction is the end of an organism or a group of organisms, often due to environmental changes or the inability to adapt.

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What is Overpopulation?

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Overpopulation occurs when a species' population exceeds the carrying capacity of its environment, leading to resource depletion.

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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, indicating a shared evolutionary history.

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What is the significance of Layer 4 in geological strata?

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Layer 4 typically contains the oldest fossils, indicating the earliest forms of life in that geological period.

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How does pollution affect natural selection in species like the peppered moth?

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Pollution can change the environment, favoring certain traits in species; for example, lighter-colored moths became more suited to survive when air quality improved.

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What is Selective Breeding?

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Selective Breeding is the human practice of breeding animals or plants for specific traits, which can influence evolution.

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What is Embryology in the context of evolution?

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Embryology is the study of embryos and their development, which can provide insights into evolutionary relationships among species.