Question

Example
diffusion and osmosis

Answer 1

diffusion mainly happens with air an cells and also with blood.

diffision simply takes place

but osmosis will only move substances through a cell if a concentration difference is created(means higher to lower concentration)

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Answer 2

Diffusion is the net movement of molecules or atoms from a region of higher concentration to a region of lower concentration. Diffusion is driven by a gradient in chemical potential of the diffusing species

osmosis is the gradual passing of a liquid through a thin layer of material a membrane