Around 4 billion years ago Venus could have been more Earth-like with liquid water on its surface because
A) Venus has a protective magnetic field
B) its atmosphere was thinner
C) Venus was farther from the Sun
D) the Sun was dimmer so Venus would have received less radiation
Correct Answer:
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Q1: Over time, as they age, the habitable
Q2: If Venus had the same atmosphere as
Q3: Which of the following provides evidence for
Q5: Evidence for the loss of water from
Q6: When Venus first formed it had large
Q7: Which of the following statements regarding the
Q8: The Moon is in the habitable zone
Q9: Venus is located
A) near the outer boundary
Q10: Based solely on its distance from the
Q11: Theoretical calculations suggest that Earth-sized planets could
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