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How does study of ancient rocks help understand Earth's evolutionary sequence?

Answer and explanation

Correct answer: They preserve clues of old atmosphere, surface and life

Ancient rocks act as geological records because their minerals, layers, chemical composition, fossils, and sometimes trapped gases preserve evidence about earlier conditions. By examining their relative position, age, and characteristics, scientists can reconstruct changes in Earth’s atmosphere, oceans, landforms, climate, and life. Sedimentary rocks may preserve fossils, while volcanic rocks can provide evidence of past volcanic activity and help establish dates through radiometric methods. Rocks do not produce solar wind, destroy ozone by definition, or exist merely for modern construction. Therefore, option A is correct.

Related tags

Ancient RocksGeological HistoryEarth EvolutionEvolution Of The EarthThe Origin And Evolution Of The EarthGeographyClass 11 Mcq

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