The repiratory system and gas exchange in humans

ppt. that follows Edexel igcse Biology- has structure of lungs, breathing, effect of exercise of breathing, alveoli and how they have adapted to their role, gas exchange, and the effects of smoking on the lungs. Hope you find it useful :)

  • Created by: lgs08130
  • Created on: 10-04-13 16:34

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