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A supermassive black hole that is erupting____.


A) will consume all gas and dust in the galaxy
B) will heat the gas in the cluster until it all escapes
C) is fed by the intergalactic gas of the cluster
D) may push its accretion disk away and choke off the eruption
E) will push other galaxies away from its parent galaxy

F) C) and E)
G) B) and E)

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In general, ____.


A) spiral galaxies are the most common galaxies, and are make up most of the cataloged galaxies
B) elliptical galaxies are the most common galaxies, and are make up most of the cataloged galaxies
C) most cataloged galaxies are spiral, but dwarf galaxies are the most common
D) most cataloged galaxies are elliptical, but spiral galaxies are the most common
E) most cataloged galaxies are spiral, but elliptical galaxies are the most common.

F) A) and B)
G) All of the above

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The unified model of active galactic nuclei focuses on differences caused by the age of the central black hole.

A) True
B) False

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