1) What's the name of this body system? a) Nervous system b) Circulatory system c) Excretory system 2) What's this? a) Nutrients b) Blood c) Antibodies 3) What's the name of this organ? a) Lungs b) Heart c) Trachea 4) Vessels (veins, arteries and capillaries) are like... a) pipes in the kitchen for water. b) tubes in your body for blood. c) bags in your chest for air.

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