Answers

2015-12-09T22:06:13+08:00
the heart, the arteries and the veins

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ou
hahaha
di ba po cardiovascular system is also known as circulatory system? so it means po na heart, blood and blood vessels po yung components niya. hehehe
yun ba hahhaa
sarre
2015-12-10T22:00:16+08:00
Heart,blood and blood vessels
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