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515

Q:

Which one of the following sets of elements was primarily responsible for the origin of life on the Earth?

  • 1
    Hydrogen, Oxygen, Sodium
  • 2
    Carbon, Hydrogen, Nitrogen
  • 3
    Oxygen, Calcium, Phosphorus
  • 4
    Carbon, Hydrogen, Potassium
  • Show Answer
  • Workspace

Answer : 2. "Carbon, Hydrogen, Nitrogen"

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