( Diffusion ( ( ( involves ( ( the movement ) ( of ( molecules ( from ( ( a region ) ( of ( high concentration ) ) ) ) ) ) ) ) ( to ( ( a region ) ( of ( lower concentration ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Diffusion)) (VP (VBZ involves) (NP (NP (DT the) (NN movement)) (PP (IN of) (NP (NP (NNS molecules)) (PP (IN from) (NP (NP (DT a) (NN region)) (PP (IN of) (NP (JJ high) (NN concentration)))))))) (PP (TO to) (NP (NP (DT a) (NN region)) (PP (IN of) (NP (JJR lower) (NN concentration)))))) (. .)))
Diffusion involves the movement of molecules from a region of high concentration to a region 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))))))))))))))) (. .)))