The sun’s surface is made up mostly of

The sun's surface is made up mostly of hydrogen as it takes up 70% of the sun's surface. Where as, others take up lower compared to it. Such are the helium, carbon, oxygen, nitrogen and other substances that consists little amount of how they take up the sun.

reflecting point a across the origin negates both of its coordinates.

b = (5, -4)

answer; ///(true)/// fusion occurs in the sun's core;