Diffusion is the ____ of substances from where there is a high concentration (____) to where there is a low concentration (very ____). Substances move ____ and out of cells through the cell ____ by the process of ____. For example, ____ diffuses into our red ____ cells to be carried around the body. It then diffuses ____ of the red blood cells when it reaches cells that need it.

Diffusion

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埋め込み

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