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→Key Stage 3
==Key Stage 3==
===Meaning===
The [[lungs]] are [[organ]]s in the [[Breathing System|breathing system]] used to [[transfer]] [[oxygen]] from the [[air]] to the [[blood]] and [[transfer]] [[Carbon Dioxide]] from the [[blood]] to the [[air]].
|[[File:Lungs.png|center|300px]]
|-
| style="height:20px; width:200px; text-align:center;" |A computer generated image drawing of a pair of the [[lungs]].
|}