diffusion is the movement of particles from region of higher concetration to a region of low concetration diffusion imovement yemamolecules kana matoms kubva kuarea yehigh concetration yichienda area yekulow concetration iri down a concetration gradient.Zvakafanana kana wakasprayer hair spray mudenga unoona maparticles achidzika pasi ende ezve zvinoratidza diffusion