( Diffusion ( ( is ( ( the movement ) ( of ( ( a solute ) ( from ( areas ( of ( ( high concentration ) ( to ( low concentration ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Diffusion)) (VP (VBZ is) (NP (NP (DT the) (NN movement)) (PP (IN of) (NP (NP (DT a) (NN solute)) (PP (IN from) (NP (NP (NNS areas)) (PP (IN of) (NP (NP (JJ high) (NN concentration)) (PP (TO to) (NP (JJ low) (NN concentration))))))))))) (. .)))
Diffusion is the movement of a solute from areas of high concentration to low concentration.
(ROOT (S (NP (NNP Diffusion)) (VP (VBZ is) (NP (NP (DT the) (NN process)) (SBAR (WHPP (IN in) (WHNP (WDT which))) (S (NP (DT a) (NN substance)) (ADVP (RB naturally)) (VP (VBZ moves) (PP (IN from) (NP (NP (DT an) (NN area)) (PP (IN of) (NP (NP (JJR higher)) (PP (TO to) (NP (JJR lower) (NN concentration)))))))))))) (. .)))
Diffusion is the process in which a substance naturally moves from an area of higher to lower concentration.