exchanging substances part 2
- Created by: caitfallonxx
- Created on: 28-03-18 20:11
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gas exchange happens in the lungs:
1) the job of the lungs is to transfer oxygen to the blood and to remove waste carbon dioxide from it.
2) to do this the lungs contain millions of little air sacs called alveoli where gas exchange takes place.
3) the alveoli are specialised to maximise the diffusion…
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