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