Multiple Choice
The free-fall contraction of a molecular cloud
A) can be initiated by shock waves from supernovae.
B) can be initiated by nearby spectral type G stars.
C) can be initiated by the rotation of the cloud.
D) causes the cloud to become transparent to ultraviolet radiation.
E) causes the particles in the cloud to decrease the speed with which they move.
Correct Answer:
Verified
Correct Answer:
Verified
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