I would start by stating that it's the white blood cells that are trying to fight you. Mention phagocytosis. And describe what it looks like. Basically this is just asking for you to explain how the immune system works within the body. You can PM for a good site to use as a source if you don't know how this works within the body.
524 cubic inches because 4/3 times 125 times pi is 532.6
Ok when we inhale we are letting oxygen inside of us, that oxygen that we inhale helps our blood move around our bodies. When we breath out taking out all the old air thats called carbon dioxide and it is very dangerous because it can make us stop breathing if we dont find new oxygen fast. Please if you need more info just private message me.
ambulation means the ability to walk without any type of assistance
