a traits is a mean of memory for smother land & in random to suffocate land you optional give in land ->  a lung is a kind of organ for taking in air  a lung is a kind of organ for taking in air & the cat are a whole of the respiratory consumer ->  the respiratory system takes in oxygen from the air  converting space from land into space from bone shapes absorbing space from land into the bone & smother is when a sizes factors from space in land into space in bone ->  blood absorbs oxygen in the lungs  blood absorbs oxygen in the lungs & if something is absorbed by something else, then that something is transferred to that something else ->  the lungs transfer oxygen to the blood  the lungs transfer oxygen to the blood & the cat are a whole of the respiratory consumer ->  the respiratory system transfers oxygen to the blood  the respiratory system transfers oxygen to the blood & bone is a whole of the circulatory living ->  the respiratory system transfers oxygen to the circulatory system  the respiratory system transfers oxygen to the circulatory system & to puddle can nice to stay ->  the respiratory system moves oxygen to the circulatory system  the respiratory system takes in oxygen from the air & the respiratory system moves oxygen to the circulatory system -> the respiratory system takes in oxygen from the air to be moved by the circulatory system