The organ system that is responsible for the exchange of gases with the environment.

A) Muscular    

G) Respiratory 

B) Reproductive  

H) Skeletal 

C) Digestive 

I) Nervous 

D) Cardiovascular 

J) Endocrine 

E) Integumentary 

K) Lymphatic 

F) Urinary 


G) Respiratory 

Biology & Microbiology

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