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IceJOKER [234]
3 years ago
11

The lungs and respiratory system work closely with the ___________ system to make sure oxygen reaches all the cells of our body.

Biology
2 answers:
Svetach [21]3 years ago
6 0
The circulatory system
 
astraxan [27]3 years ago
4 0
<span>respiratory and circulatory systems work together

</span>
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