Which sequence correctly shows how stars form?
a
nebula forms → nebula collapses → prot...
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Which sequence correctly shows how stars form?
a
nebula forms → nebula collapses → protostar forms → fusion begins
b
protostar forms → nebula forms → fusion begins → nebula collapses
c
fusion begins → nebula forms → protostar forms → nebula collapses
d
nebula forms → protostar forms → nebula collapses → fusion begins
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