www.bbc.co.uk/learningzone/clips/inhaled-and-exhaled/113.html

  •  The constituents of inhaled and exhaled air are compared to help explain how respiration releases energy locked in high-energy food. The presenter talks to a group of children about the food they will need for a Himalayan walking trip. Freeze dried carbohydrates are a good energy store but how is the energy released? The expert explains how energy is released in a process called respiration. The presenter inhales and exhales and breathing is measured to help explain the respiration process.


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