dance1d426 dance1d426

03-02-2018
Biology

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what are the four main parts of the circulatory system?

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KatieKitten KatieKitten

03-02-2018

The heart, the blood vessels, lymphatic system (or defense system), and the blood are the four main parts of the circulatory system.

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atoriehansell20 atoriehansell20

03-02-2018

heart, blood and blood vessels, veins, and capillaries

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