Star formation begins when a.
gas and dust collapse inward.
c.
the fusion of hydrogen slows down.
b.
nuclear fusion starts in the core.
d.
the core becomes carbon and oxygen.

Please select the best answer from the choices provided
(Space and Environment)

What role do traits play in affecting an organisms ability to reproduce? finches

The energy available as a result of the motion of a body is called energy. -potential -gravitational -kinetic -chemical

Use the phylogenetic tree to the right to determine which statement below is true. organisms a and f are not related. organism e is more closely related to organism b than organism f. organisms c and d are more closely related than organisms a and b. phylogenetic trees