One to take oxygen and other nutrients to other cells and one to take away CO2 and waste away.
the circulatory system is the way it keeps your heart pumping
The two external controls of the circulatory system is the house.
tom dunsdon
the heart and the veins
the skeletal system and the circulatory
The two main part of circulatory system are hearth and Arteries
The respiratory system and the circulatory (cardiovascular) system.
The two main part of circulatory system are hearth and Arteries
Some species, like insects, have an open circulatory system
Blood and oxygen are transported by the circulatory system.
A birds circulatory system consists of two loops.
Coral don't have circulatory systems. They just have a gastrovascular system!