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Geography, 21.09.2019 17:30 lalala1212

During the formation of a star, the contraction stops once
select one:
a. hydrogen fusion becomes the dominant energy source.
b. the star collapses into a black hole.
c. the star collapses into a white dwarf.
d. helium fusion becomes the dominant energy source.

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During the formation of a star, the contraction stops once
select one:
a. hydrogen fusi...

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