What Is the Source of MOST of the Heavy Elements

question 129

Multiple Choice

What is the source of MOST of the heavy elements on Earth and in human bodies?

• A) thermonuclear fusion reactions in the cores of massive stars before the supernova phase
• B) explosive nucleosynthesis during supernova explosions of massive stars
• C) cosmic ray interactions with hydrogen and helium nuclei in interstellar clouds
• D) nuclear reactions during the formation of the universe (the Big Bang)