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SCORPION-xisa [38]

4 years ago

13

Discuss two instances where valves are important in the circulatory system

2 answers:

Lilit [14]4 years ago

5 0

They delegate the four chambers of the heard , and open correctly so that blood can successfully flow out

nydimaria [60]4 years ago

3 0

It deals with the heart blood and how the lungs fill the cells with oxygen for blood

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