The three fusion reactions in the Sun that form helium from hydrogen are together called the
A) proton-proton chain.
B) hydrogen cycle.
C) helium sequence.
D) neutrino exchange.

Question

Quizplus · Accepted Answer

The proton-proton chain is the series of fusion reactions by which stars like the Sun convert hydrogen into helium, the primary process by which energy is generated in the Sun.

The Three Fusion Reactions in the Sun That Form Helium