MCQ
Which of the following statement(s) is/ are correct?
  • A
    The percentage of nitrogen in air varies from place to place on the earth.
  • B
    The percentage of oxygen in air varies from place to place on the earth.
  • Both the above are correct.
  • D
    All of the above.

Answer

Correct option: C.
Both the above are correct.
Both the above are correct.

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