Relacionar Columnas Natural ScienceVersión en línea Vocabulary por Marta Castaño 1 We breathe air through our nose 2 Our teeth chew the food in the mouth 3 the food goes to the stomach 4 It carries oxygen in the blood 5 It gives us the oxygen we need to live 6 The heart pumps blood It's a respiratory system It's the respiratory system It's a digestive system It's a circulatory system It's the circulatory system It's the digestive system