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Dvinal [7]
3 years ago
7

A correct balance of oxygen and carbon dioxide must be maintained in the human body to survive. Which system is responsible taki

ng in oxygen and releasing carbon dioxide to the external environment to maintain this internal balance?
A. the respiratory system
B. the circulatory system
C. the digestive system
D. the nervous system
Social Studies
1 answer:
DerKrebs [107]3 years ago
7 0

Answer:

respiratory system

Explanation:

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