Class 9 > Samacheer Kalvi - English Medium > Atmosphere

  • Choose the correct answer

    _______is the most important gas for the survival of living organisms.


    - a. Helium

    - b. carbon-di-oxide

    - c. oxygen

    - d. methane


1 Answer

  • Correct Answer:

    c. oxygen

    Answered on 08/02/2020 at 09:44AM by Thamizh

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