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adreamer adreamer
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7 years ago
If we allow for a simple runaway greenhouse effect, the inner boundary of the Sun's habitable zone would be
A) roughly halfway between the orbits of Venus and Mercury
B) just outside the orbit of the planet Mercury
C) roughly half way between the orbits of the Earth and Venus
D) just inside the orbit of the Earth
Textbook 
Life in the Universe

Life in the Universe


Edition: 4th
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19Clyde19Clyde
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7 years ago
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adreamer Author
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7 years ago
Good timing, thanks!
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This calls for a celebration Person Raising Both Hands in Celebration
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You make an excellent tutor!
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