________ Are Small Dark Nebulae About 1 Light-Year in Diameter

question 45

Multiple Choice

________ are small dark nebulae about 1 light-year in diameter that contain 10 to 1,000 solar masses.

• A)HI regions
• B)HII regions
• C)Emission nebulae
• D)Bok globules
• E)Reflection nebulae

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