Answers

2016-06-16T20:26:12+08:00
Heart, blood vessels, blood
1 1 1
2016-06-17T06:18:51+08:00
Heart - main organ, known as living pump. it pumps the blood throughout the body.

Blood vessels - carries the blood throughout the body.

types:
*Arteries
*Capillaries
*Veins

Blood - known as "river of life."
- responsible of carrying materials throughout the body.
1 1 1