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What is diffusion?explain.?
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What is diffusion?explain.?
Diffusion
 is the movement of a substance from an area of high concentration to an area of low concentration. 
Diffusion
 happens in liquids and gases because their particles move randomly from place to place. 
Diffusion
 is an important process for living things; it is how substances move in and out of cells.
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What is diffusion?explain.?
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