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MCQBeginnerSolar System & Planetary Science
IAAC — 2019 Final Round
Question 2
Mars might be a place for future human explorations. However, humans cannot breathe on the surface of Mars because the atmosphere consists mostly of ...
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Source
Source: International Astronomy and Astrophysics Competition (IAAC), Final Round 2019. Question wording and answer-choice text are transcribed from the official training PDF; the explanation and metadata are original.