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lukax22 lukax22
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6 years ago
The use of oxygen and the production of carbon dioxide and their exchange between the cells and blood is:
 
  A. internal respiration.
   B. external respiration.
   C. bradypnea.
   D. orthopnea.
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takirahh_takirahh_
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6 years ago
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lukax22 Author
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6 years ago
Thanks for your help!!
Marcie D
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Yesterday
this is exactly what I needed
Chaldoren
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2 hours ago
Correct Slight Smile TY
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