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The universe cooled after the Big Bang. At some point, hydrogen atoms combined to
helium. What is this process called?
受
Fusion
4×
B
Fission
C
4 D
Red shift
Nuclear decay
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10 of 20
Next▶
The universe cooled after the Big Bang. At some point, hydrogen atoms combined to
helium. What is this process called?
受
Fusion
4×
B
Fission
C
4 D
Red shift
Nuclear decay
yoitube
>