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What is considered the most direct result of outgassing on early Earth?

Answer and explanation

Correct answer: Development of early atmosphere

Direct answer: B, development of the early atmosphere. Outgassing means the release of gases from Earth’s hot interior through volcanic activity and related processes. These gases included water vapour, carbon dioxide, nitrogen and other substances. Their release created and changed the early atmosphere; later cooling allowed water vapour to condense and helped form oceans. Option A, the asteroid belt, formed from leftover material in the solar system, not mainly from gases escaping Earth. Option B directly names the result of outgassing. Option C, the birth of the Sun, happened earlier during solar-system formation and was not caused by Earth’s gases. Option D is unrelated: outer planets did not disappear because of outgassing. Memory cue: outgassing means gases out, atmosphere starts.

Related tags

GeographyOutgassingEarly-Atmosphere

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