( ( ( ( Diffusion movement ) ( of ( ( a substance ) ( from ( ( an area ) ( of ( high concentration ) ) ) ) ) ) ) ( to ( ( an area ) ( of ( lower concentration ) ) ) ) ) . )
(ROOT (NP (NP (NN Diffusion) (NN movement)) (PP (IN of) (NP (NP (DT a) (NN substance)) (PP (IN from) (NP (NP (DT an) (NN area)) (PP (IN of) (NP (JJ high) (NN concentration))))))) (PP (TO to) (NP (NP (DT an) (NN area)) (PP (IN of) (NP (JJR lower) (NN concentration))))) (. .)))
Diffusion movement of a substance from an area of high concentration to an area of lower concentration.
(ROOT (S (NP (NNP Diffusion)) (VP (VBZ is) (NP (NP (DT the) (NN term)) (PP (IN for) (NP (NP (DT the) (NN movement)) (PP (IN of) (NP (NP (NNS molecules)) (PP (IN from) (NP (NP (DT an) (NN area)) (PP (IN of) (NP (NP (JJ high) (NN concentration)) (PP (TO to) (NP (NP (DT an) (NN area)) (PP (IN of) (NP (JJ low) (NN concentration))))))))))))))) (. .)))