ellenrucks4427 ellenrucks4427

25-06-2018
Biology

contestada

How are the respiratory and circulatory systems connected answers?

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zendemi zendemi

25-06-2018

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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lustlarrywrites lustlarrywrites

01-10-2018

They trade oxygen and carbon dioxide.

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