Multiple Choice
Why does the habitable zone shift outward as a star evolves?
A) The star produces more radiation as it ages on the main sequence.
B) The star produces less radiation as it ages on the main sequence.
C) The planets adaptive mechanisms shift toward producing a more habitable environment.
D) The planets adaptive mechanisms shift toward producing a less habitable environment.
Correct Answer:

Verified
Correct Answer:
Verified
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