1. Riya Kumari
  2. Science 10
  3. Thursday, June 16 2016, 10:33 AM
Give one reason why multicellular organisms require special organs for exchanges of gases between their body and their environment.
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Multi cellular organisms need more O2 to perform various body functions. They therefore, have special organs for exchange of gases.
  1. more than a month ago
  2. Science 10
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