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