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