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fredd [130]
3 years ago
8

How are the respiratory and circulatory systems connected answers?

Biology
2 answers:
Feliz [49]3 years ago
8 0

They trade oxygen and carbon dioxide.

Yakvenalex [24]3 years ago
6 0
What are your options, if you have any?

I know they both need each other in order to function, but I dont know if thats the answer needed, or if its more complicated than that..
hope I could help atleast a bit!
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