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How does the order of fossil layers help in understanding evolution?

Answer and explanation

Correct answer: Older lower layers and newer upper layers show a time sequence

In an undisturbed sequence of sedimentary rock, lower layers were generally deposited earlier than layers above them. Fossils found in successive layers therefore provide evidence about organisms living at different relative times. Comparing their structures can reveal a sequence of biological changes and support evolutionary explanations. Option A is correct; B reverses the usual order, while C and D ignore the historical information preserved by fossils.

Related tags

Fossil LayersEvolution EvidenceRelative AgeHeredity And EvolutionWorld Of LivingScienceClass 10 Mcq

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