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When chemical evolution is placed before biological evolution which logical sequence is formed?

Answer and explanation

Correct answer: Simple chemicals then organic substances then early life

The correct answer is option A: simple chemicals, then organic substances, then early life. Chemical evolution describes a proposed sequence in which simple substances present on the early Earth could participate in reactions that produced more complex organic molecules. With further organisation, some of these molecules could contribute to primitive pre-cellular systems and eventually the earliest forms of life. Biological evolution begins after living systems exist; it concerns their variation, adaptation and diversification. Option B is illogical because humans cannot precede the chemical and biological conditions that produced life. Option C mixes ozone formation with an incorrect order and option D combines unrelated features of Earth. The memory cue is “chemistry first, biology next”: non-living chemical complexity must precede biological evolution.

Related tags

Chemical EvolutionOrigin Of LifeBiological EvolutionEarth EvolutionEvolution Of The EarthThe Origin And Evolution Of The EarthGeographyClass 11 Mcq

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