SchoolEqualsSadLife
SchoolEqualsSadLife SchoolEqualsSadLife
  • 26-01-2017
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Name the four principle functions of the respiratory system

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babyinbluejeans
babyinbluejeans babyinbluejeans
  • 26-01-2017
The primary organs of the respiratory system are lungs, which function to take in oxygen and expel carbon dioxide as we breathe. The human respiratory system is a series of organs responsible for taking in oxygen and expelling carbon dioxide.
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ash244 ash244
  • 26-01-2017
The primary organs of the respiratory system are lungs.
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