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Anonymous Anonymous
  • 24-01-2017
  • Biology
Answered

What structures of the circulatory system carry blood containing carbon dioxide from the body back to the heart ?

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xxxCaitlynxxx
xxxCaitlynxxx xxxCaitlynxxx
  • 24-01-2017

The lungs. The left and right ventricle I believe.

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sweetsomething101
sweetsomething101 sweetsomething101
  • 24-01-2017

the answer is air sacs 

your welcome :)) 

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