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SCORPION-xisa [38]
3 years ago
13

Discuss two instances where valves are important in the circulatory system

Health
2 answers:
Lilit [14]3 years ago
5 0
They delegate the four chambers of the heard , and open correctly so that blood can successfully flow out
nydimaria [60]3 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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