A group of rats placed in an air-tight box for some hours died because they...

BIOLOGY
WAEC 2009

A group of rats placed in an air-tight box for some hours died because they

  • A. breathed in air containing nitrogen.
  • B. produced carbon dioxide
  • C. ran short of energy
  • D. used up the available oxygen

Correct Answer: D. used up the available oxygen



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