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The most important substance necessary for the maintenance of life are carbon , oxygen

The most important substance necessary for the maintenance of life are carbon , oxygen
Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE
  • A Hydrogen, soil and enzymes
  • B Hydrogen, salt and water
  • C Nitrogen, salt and soil
  • D Nitrogen, salt and water
Correct Answer: Option D
Explanation:

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