In the life cycle of a star, the stage nebula refers to: – McqOptions

MCQOPTIONS

1.	In the life cycle of a star, the stage nebula refers to:
A.	a cloud of dust and hydrogen
B.	the stage when the outer layers expand, cool down and become less bright
C.	the last stage of its life
D.	the outer shell of a star
Answer» B. the stage when the outer layers expand, cool down and become less bright

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