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killian killian
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11 years ago
What do we mean by a protogalactic cloud?
A) A cloud of hydrogen and helium that contracts to become a galaxy
B) A term once used historically to refer to any galaxy
C) The cloud-like halo that surrounds the disks of spiral galaxies
D) A cloud of gas that was once a galaxy
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padrepadre
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11 years ago
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killian Author
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11 years ago
Thx.
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