When nuclear fusion begins, what can be said about the internal processes within that star? Atoms in the star begin to split.
Atoms in the star begin to combine.
The star is turned into a nebula.
The star is turned into a blue giant.

Hi there! Hopefully this helps!

The answer to your question is the second sentence:

Atoms in the star begin to combine.

Atoms in the star begin to combine.

Explanation:

the most common type of reef is the fringing reef. this type of reef grows seaward directly from the shore. they form borders along the shoreline and surrounding islands.