( ( ( The movement ) ( of ( molecules ( from ( ( a location ) ( where ( they ( ( are ( in ( ( a ( high concentration ) ) ( to ( an area ) ) ) ) ) ( where ( they ( are ( in ( a ( lower concentration ) ) ) ) ) ) ) ) ) ) ) ) ) ) ( ( is ( called diffusion ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN movement)) (PP (IN of) (NP (NP (NNS molecules)) (PP (IN from) (NP (NP (DT a) (NN location)) (SBAR (WHADVP (WRB where)) (S (NP (PRP they)) (VP (VBP are) (PP (IN in) (NP (NP (DT a) (JJ high) (NN concentration)) (PP (TO to) (NP (DT an) (NN area))))) (SBAR (WHADVP (WRB where)) (S (NP (PRP they)) (VP (VBP are) (PP (IN in) (NP (DT a) (JJR lower) (NN concentration)))))))))))))) (VP (VBZ is) (VP (VBN called) (NP (NN diffusion)))) (. .)))
The movement of molecules from a location where they are in a high concentration to an area where they are in a lower concentration is called diffusion .
(ROOT (S (NP (PRP You)) (VP (VBP call) (NP (NP (DT the) (NN movement)) (PP (IN of) (NP (DT a) (NN substance)))) (PP (IN from) (NP (NP (DT an) (NN area)) (PP (IN of) (NP (NP (DT a) (JJR higher) (NN amount)) (PP (IN toward) (NP (NP (DT an) (NN area)) (PP (IN of) (NP (JJR lower) (NN amount) (NN diffusion)))))))))) (. .)))