Well for one it gets air to your cells. Two, it lets out bod carbon dioxide. Three, it is the mane part of living.  when you breath in the arteries grab the air and brings it to the heart. The heart pumps the air throw the arteries to get the cells. Then wants the air energizes the cells they go and fight  the bad Bactria. Then air go’s and energizes other cells. Then the vanes grab the carbon dioxide. Then the vanes send the carbon dioxide to the heart. Then the  heart sends the carbon dioxide to your longs. Then you exhale the carbon dioxide leaves your body. then it dues that all your life.



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