____ is(are) believed to make up 50 percent of the mass of the interstellar medium.
A) The intercloud medium
B) HI clouds
C) Coronal gas
D) Molecular clouds
E) Dark nebulae
Correct Answer:
Verified
Q23: Which of the following is evidence of
Q24: _ is(are)believed to be produced by supernova
Q25: Stars are born in
A)reflection nebulae.
B)dense molecular clouds.
C)HII
Q26: Which of the following is evidence of
Q28: Coronal gas
A) causes stars to look bluer
Q29: The emission lines from O III are
Q30: What property of blue light allows it
Q31: What type of radiation is emitted when
Q32: HII emission nebula regions are found around
Q100: Molecular clouds are mapped using CO instead
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