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Why is explaining origin of life only by chemical evolution incomplete?

Answer and explanation

Correct answer: Because suitable water temperature atmosphere and surface conditions were also needed

The direct answer is A: suitable water, temperature, atmosphere, and surface conditions were also needed. Chemical evolution explains how simple substances may gradually form more complex organic substances, but it does not by itself describe every environmental condition required for life to arise and continue. The reasoning is: chemicals provide material; suitable water allows reactions; a suitable temperature supports those reactions; atmosphere and surface conditions protect or enable the process; therefore chemical evolution alone is incomplete. Option A is correct because it includes these necessary physical conditions. Option B is wrong because chemical evolution is important, even though it is not the whole explanation. Option C is wrong because life did not need only solar wind, which can be harmful and is not a complete life-supporting environment. Option D is wrong because Earth’s core is extremely hot and under immense pressure, not a suitable place for the origin of ordinary life. Exam cue: origin of life is a multi-factor explanation—chemistry plus suitable environment.

Related tags

Origin Of LifeChemical EvolutionLife Conditions

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