Question

select the correct answer from each drop - down menu. in medium - sized stars such as the sun, nuclear fusion almost always means the fusing of nuclei to form, but larger stars can produce elements as heavy as

Explanation:

In medium - sized stars like the Sun, nuclear fusion mainly involves hydrogen nuclei fusing. This is because hydrogen is abundant in such stars. Larger stars have more extreme conditions (higher temperatures and pressures) which allow for the production of heavier elements. Iron is a significant element in this context as it is a relatively heavy element that can be formed in larger stars through a series of nuclear fusion reactions.

Answer:

The first drop - down menu should be "hydrogen" and the second drop - down menu should be "iron".