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  • Nuclear Fusion Online Test
  • What are the two most abundant elements inside of stars?
Multiple choice

What are the two most abundant elements inside of stars?

  1. calcium and iron

  2. lithium and beryllium

  3. hydrogen and helium

  4. gas and dust

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Stars are primarily composed of hydrogen, which fuses into helium. These two elements make up the vast majority of the mass in most stars.

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