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Your lungs are made up of tiny sacks called alveoli. They have a very large surface area and a thin membrane so that dissolved substances, mainly the oxygen you breathe in, can pass through (or diffuse) easily. The dissolved oxygen diffuses through the alveoli membranes into the blood capillaries that run over them, and therefore the oxygen gets into your bloodstream. The heart then pumps around the newly re-oxygenated blood, which then diffuses into your cells and allows your body to respire, or use energy.
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What is the definition of weight transfer?
what is the defintion of weight transfer
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The English definition of transfer?
transfer - to move from one place to another... example: I will transfer this box from the kitchen to the garage.
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What is the definition of a element?
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