( ( a. ( ( ( the cells ) ( of ( multicellular organisms ) ) ) ( tend ( to accumulate ) ) ) ) ( ( wastes , ) ( ( a consequence ) ( of ( diffusion b. ) ) ) ) )
(ROOT (SINV (VP (VBP a.) (SBAR (S (NP (NP (DT the) (NNS cells)) (PP (IN of) (NP (NN multicellular) (NNS organisms)))) (VP (VBP tend) (S (VP (TO to) (VP (VB accumulate)))))))) (NP (NP (NNS wastes)) (, ,) (NP (NP (DT a) (NN consequence)) (PP (IN of) (NP (NN diffusion) (NN b.)))))))
a. the cells of multicellular organisms tend to accumulate wastes, a consequence of diffusion b.
(ROOT (S (S (NP (JJ Single-celled) (NNS organisms) (CC and) (NN multicellular) (NNS organisms)) (VP (VBP have) (NP (NP (DT this)) (PP (IN in) (NP (JJ common)))))) (: :) (S (NP (DT both)) (VP (VBP have) (NP (DT a) (NN way) (S (VP (TO to) (VP (VB get) (ADJP (JJ rid)) (PP (IN of) (NP (NN waste) (NNS materials))))))))) (. .)))