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Q: The stars are mainly made up of _____.
  • A. Oxygen and Hydrogen
  • B. Hydrogen and Carbon
  • C. Hydrogen and Helium
  • D. Oxygen and Helium
Correct Answer: Option C - The stars are mainly made up of Hydrogen and Helium. The gases present in stars are Hydrogen (70%), Helium (28%) and other gases (2.5%). The energy by a shining star is produced by thermonuclear fusion of hydrogen into helium in the stars core.
C. The stars are mainly made up of Hydrogen and Helium. The gases present in stars are Hydrogen (70%), Helium (28%) and other gases (2.5%). The energy by a shining star is produced by thermonuclear fusion of hydrogen into helium in the stars core.

Explanations:

The stars are mainly made up of Hydrogen and Helium. The gases present in stars are Hydrogen (70%), Helium (28%) and other gases (2.5%). The energy by a shining star is produced by thermonuclear fusion of hydrogen into helium in the stars core.