( Diffusion ( ( is ( ( the ( net movement ) ) ( of ( ( ( a substance ) ( -LRB- ( ( ( e.g. , ) ( an ( atom ( , ( ( ion or ) molecule ) ) ) ) ) -RRB- ) ) ) ( from ( ( a region ) ( of ( ( high concentration ) ( to ( ( a region ) ( of ( low concentration ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Diffusion)) (VP (VBZ is) (NP (NP (DT the) (JJ net) (NN movement)) (PP (IN of) (NP (NP (NP (DT a) (NN substance)) (PRN (-LRB- -LRB-) (NP (NP (NNP e.g.)) (, ,) (NP (DT an) (NN atom) (, ,) (NN ion) (CC or) (NN molecule))) (-RRB- -RRB-))) (PP (IN from) (NP (NP (DT a) (NN region)) (PP (IN of) (NP (NP (JJ high) (NN concentration)) (PP (TO to) (NP (NP (DT a) (NN region)) (PP (IN of) (NP (JJ low) (NN concentration))))))))))))) (. .)))
Diffusion is the net movement of a substance (e.g., an atom, ion or molecule) from a region of high concentration to a region of low 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))))))))))))))) (. .)))