this is a story about oxygen

the nose is the famous tourist attraction of the oxygen tour

the nose filters the air that goes into the nose

the windpipe is a tunnel of where oxygen goes to the lungs

while the other gases stay out only the oxygen goes in

then there is a series of tunnels called artries and veins that lead to the heart

this allows the red blood cells to distribute the oxygen

then after all the oxygen is used up all that is left is carbon dioxide

then it goes back to the lungs

and the carbon dioxide goes to the nose where it gets exhaled out

then it repeats

thank you for listening to our presentation and taking part of our oxygen tour goodbye!