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What is the major cause of the strong greenhouse effect on Venus?

Answer and explanation

Correct answer: A dense carbon dioxide atmosphere

The governing concept is the greenhouse effect: a planet’s atmosphere allows incoming solar energy to enter but absorbs and re-emits outgoing infrared radiation, trapping heat near the surface. Venus has an exceptionally dense atmosphere composed mainly of carbon dioxide, a strong greenhouse gas. Its thick clouds and atmospheric pressure reinforce the heat-trapping process, producing extremely high surface temperatures. Option A is correct because the dense carbon dioxide atmosphere is the major cause. Option B would prevent atmospheric heat trapping, option C is inconsistent with Venus’s hot surface, and option D is false because Venus is relatively close to the Sun. The question belongs to planetary formation and the solar system because it compares planetary conditions.

Related tags

VenusGreenhouse EffectCarbon DioxideSolar SystemStar FormationFormation Of PlanetsAnd Our Solar SystemStar Formation Formation Of Planets And Our Solar SystemThe Origin And Evolution Of The EarthGeography

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