( They ( also ( ( need ( to ( ( know ( ( the ( basic definition ) ) ( of ( diffusion-that ( molecules move ) ) ) ) ) ( from ( areas ( of ( ( higher concentration ) ( to ( areas ( of ( lesser concentration ) ) ) ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (NP (PRP They)) (ADVP (RB also)) (VP (VBP need) (S (VP (TO to) (VP (VB know) (NP (NP (DT the) (JJ basic) (NN definition)) (PP (IN of) (NP (JJ diffusion-that) (NNS molecules) (NN move)))) (PP (IN from) (NP (NP (NNS areas)) (PP (IN of) (NP (NP (JJR higher) (NN concentration)) (PP (TO to) (NP (NP (NNS areas)) (PP (IN of) (NP (JJR lesser) (NN concentration))))))))))))) (. .)))
They also need to know the basic definition of diffusion-that molecules move from areas of higher concentration to areas of lesser 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))))))))))))))) (. .)))