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Diffusion is a process by which molecules move down their concentration gradient. The process does not require any membrane. Gas molecules such as perfume can diffuse freely in a close environment and a spoon of sugar will dissolve in a cup of tea in couple of minutes
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thnk u rohan for marking as brainliest
your welcome
Diffusion is the process of by which molecules intermingle as a result of their kinetic energy of random motion
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