8.L.4.1 Review

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What is lithospheric plate movement?

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The movement of the Earth's lithosphere, which is divided into tectonic plates that float on the semi-fluid asthenosphere beneath them.

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What evidence supports lithospheric plate movement over time?

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Fossils of tropical plants found in a cold climate area indicate that continents have moved, as these plants could not survive in such climates.

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What are fossils?

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Fossils are the preserved remains or traces of ancient organisms, providing evidence of past life and environments.

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How do fossils help in biological classification?

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Fossils help scientists explore the relationship between modern organisms and ancestral species, aiding in the classification of life forms.

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What are homologous structures?

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Homologous structures are body parts in different species that share a common ancestry, even if they have different functions.

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What are analogous structures?

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Analogous structures are body parts in different species that have similar functions but do not share a common ancestry.

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What is the Theory of Evolution?

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The Theory of Evolution proposes that all species of organisms arise and develop through natural selection and common descent.

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What is the significance of homologous structures in evolution?

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Homologous structures provide evidence that different species share a common ancestor, supporting the idea of evolution.

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What is the difference between homologous and analogous structures?

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Homologous structures arise from a common ancestor, while analogous structures arise independently in different species.

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What role do fossils play in understanding Earth's history?

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Fossils provide evidence of past life forms, their environments, and how they have changed over time.