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1. 
What does the circulatory system do?
A.
eliminates the waste that the body produce
B.
passes the oxygen it takes from the air to the blood
C.
transform the food we eat into nutrients
2. 
What does the digestive system do?
A.
carries nutrients and the oxygen to your cells
B.
transform the food we eat into nutrients
3. 
What does the respiratory system do?
A.
eliminates the waste that our body produce
B.
passes the oxygen it takes from the air to the blood
4. 
What does the excretory system do?
A.
consist of the unirary sustem an sweat glands
B.
carries the nutrients and oxygen to your cells