( ( ( Matter ( and ( Energy Flow ) ) ) ( in Ecosystems ) ) ; )
(ROOT (NP (NP (NNP Matter) (CC and) (NNP Energy) (NNP Flow)) (PP (IN in) (NP (NNP Ecosystems))) (: ;)))
Matter and Energy Flow in Ecosystems;
(ROOT (S (PP (IN Unlike) (NP (NN energy))) (, ,) (NP (NN matter)) (VP (VBZ does) (RB n't) (VP (VB need) (S (VP (TO to) (VP (VB be) (VP (ADVP (RB constantly)) (VBN added) (PP (TO to) (NP (NNS ecosystems))))))) (SBAR (IN because) (S (NP (PRP it)) (VP (VBZ is) (VP (VBN recycled) (PP (IN through) (NP (NNS ecosystems))))))))) (. .)))