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October 23, 2014

Homework Help: science

Posted by bolometric on Thursday, February 8, 2007 at 8:06am.

When a H II region is observed, it signals what stage in stellar formation?
A the initial collapse of the interstellar cloud
B the formation of planetary nebulae
C the prostar stage
D the zero age main sequence stage
E depending on their masses the stars inside may be at different stages of formation

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