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20 April, 04:55

What substance is needed to carry out

respiration?

A oxygen

B carbon dioxide

C nitrogen

D carbon

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Answers (2)
  1. 20 April, 05:01
    0
    A oxygen cellular respiration requires oxygen and releases carbon dioxide. So First option
  2. 20 April, 05:19
    0
    The answer is A Oxygen in Animals

    Carbon Dioxide in Plants
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