Question

1. drag the elements below into the order they are formed in a star, from first for newly formed stars to last for old stars. (1 point) newly formed star old star hydrogen helium oxygen carbon

Explanation:

Step1: Hydrogen fusion

In a newly - formed star, hydrogen ($H$) is the most abundant element. Through nuclear fusion, hydrogen is converted into helium ($He$). The reaction is \(4H
ightarrow He + energy\).

Step2: Helium fusion

As the star ages and the hydrogen in the core is depleted, helium starts to fuse. Helium can fuse to form carbon ($C$) in reactions like \(3He
ightarrow C\) (in some stellar conditions).

Step3: Carbon - related processes (for oxygen formation)

Carbon can further be involved in reactions to form oxygen. For example, in some stellar environments, \(C + He
ightarrow O\)

Answer:

Hydrogen, Helium, Carbon, Oxygen