Biology, 04.11.2020 19:00 twinkle713derp

What process makes the birth of a star?
A. Supernova explosion
B. when it begins combining hydrogen to form helium
C. when gravity pulls in nebular dust
D. when it madd expands and cools

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What process makes the birth of a star?
A. Supernova explosion
B. when it begins combini...

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