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The universe cooled after the Big Bang. At some point, hydrogen atoms combined to
helium. What is this process called?

Fusion

B
Fission
C
4 D
Red shift
Nuclear decay
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Answer :

Final answer:

Nuclear fusion is the process where hydrogen atoms combine to form helium after the Big Bang, important in star evolution and the early universe.


Explanation:

Nuclear fusion is the process where hydrogen atoms combine to form helium. This occurred after the Big Bang when the universe was hot enough to initiate fusion, creating helium atoms from hydrogen nuclei. The fusion of hydrogen into helium is a fundamental process in the evolution of stars and the early universe.


Learn more about Nuclear fusion here:

https://brainly.com/question/14019172


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