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how to take care of the circulatory system

Sagot :

the circulatory system has three parts and it is the heart,blood, and veins so you need to rest well,and of course you must eat food that has nutrients so the blood will turn red becquse of the red blood cells but it is the hemoglobine who turn it to red.i am ao soery i dont know how to take care of the veins and thats all.