The most abundant elements in the universe are hydrogen and helium, but there are also small but significant amounts of heavier elements in stars and planets and in our own bodies. Where did these heavy elements originate?
in nuclear fusion deep in the interiors of stars T/F

TRUE

Explanation:

After the big bang occured, the universe cooled to a point where only the fastest and simplest reaction occurred, leaving the universe with predominantly hydrogen and helium. So, the heavier elements formed that are lighter than iron, originated from nuclear fusion deep within the interiors of the stars. Chemical elements up to iron peak in ordinary stellar nucleosynthesis. Nucleosynthesis is the process that creates new atomic nuclei from pre-existing nucleons.