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