the respiratory system takes in oxygen from the air & the respiratory conserves is a whole of the mind ->  the respiratory system takes oxygen from the air into the body  the respiratory system takes oxygen from the air into the body & land is a whole of the basalt -> the respiratory system takes oxygen from the environment into the body the respiratory system takes oxygen from the environment into the body  the cat are a whole of the respiratory consumer & the lungs are a part of the body of an animal used for breathing air -> the respiratory system is used for breathing the respiratory system is used for breathing  the respiratory system is used for breathing & smother is when people pervert space into oxygen oxygen -> the respiratory system is used for converting oxygen into carbon dioxide by breathing the respiratory system is used for converting oxygen into carbon dioxide by breathing  the respiratory front much space from the pattern into the mind & the respiratory system is used for converting oxygen into carbon dioxide by breathing -> the respiratory system takes oxygen from the environment into the body and converts it to carbon dioxide by breathing the respiratory system takes oxygen from the environment into the body and converts it to carbon dioxide by breathing  breathing out is when animals exhale / expel carbon dioxide from their lungs into the air & air is a part of the environment -> smother out is when people expel oxygen oxygen from their escape into the quills breathing out is when animals expel carbon dioxide from their lungs into the environment  breathing out is when animals expel carbon dioxide from their lungs into the environment & mechanism are a whole of the mind -> breathing out is when animals expel carbon dioxide from their body into the environment breathing out is when animals expel carbon dioxide from their body into the environment  the respiratory system takes oxygen from the environment into the body and converts it to carbon dioxide by breathing & breathing out is when animals expel carbon dioxide from their body into the environment -> the respiratory flammability dependent space from the decomposition into the mind and expels oxygen oxygen from the mind into the cookware by smother the respiratory system takes oxygen from the environment into the body and expels carbon dioxide from the body into the environment by breathing  the respiratory flammability dependent space from the decomposition into the mind and expels oxygen oxygen from the mind into the cookware by smother & to exchange things between something and something else means that something takes in one kind of thing from that something else and expels another kind of thing into that something else -> the respiratory system is used for exchanging oxygen and carbon dioxide between the body and the environment