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If the ozone layer developed but the hydrosphere did not exist, what would happen to the broad development of life?

Answer and explanation

Correct answer: The necessary liquid medium for life would be lacking

The governing concept is that life requires several interacting environmental conditions, not protection from radiation alone. An ozone layer could reduce harmful ultraviolet radiation, but the absence of a hydrosphere would remove the stable liquid-water environment needed for chemical reactions, transport of substances, and the development of early organisms. Thus option A is correct: the necessary liquid medium for life would be lacking. Option B is incorrect because ozone protection by itself cannot make life complex. Option C concerns neither the hydrosphere nor biological development, and option D is unrelated because the solar wind would not stop simply because an ozone layer existed. The question tests the combined importance of atmosphere, water, and biological evolution.

Related tags

OzoneHydrosphereOrigin Of LifeEarth EvolutionEvolution Of The EarthThe Origin And Evolution Of The EarthGeographyClass 11 Mcq

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