Multiple Choice
Which of the following assumptions are inherent in the concept of habitable zones?
A) All life-forms require liquid water.
B) Water is present, in some form, on all planets.
C) The size and energy output of stars with habitable zones will remain constant.
D) Life is present everywhere in the universe.
E) A planet's gravity must be similar to that of the Earth's.
Correct Answer:
Verified
Correct Answer:
Verified
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