Answer:
The most common elements, like carbon and nitrogen, are created in the cores of most stars, fused from lighter elements like hydrogen and helium. The heaviest elements, like iron, however, are only formed in the massive stars which end their lives in supernova explosions.
Explanation:
Answer:
I would say the second one.
Explanation:
I'm sorry if it's wrong
The answer would be letter a
Mutuaism
because they both benift from each other
