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Astronomy
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Accretion and Planetesimal Growth
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Astronomy
AST.124 Accretion and Planetesimal Growth
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Which answer best summarizes why accretion is a growth process rather than just a motion process?
A
objects gain mass when smaller pieces stick, collide, or merge with them
B
objects grow because empty space turns into rock
C
objects grow only when they reflect more sunlight
D
objects grow by moving faster even if their mass stays the same
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