( ( The ( egg ( and ( tadpole stages ) ) ) ) ( ( require ( ( water , ) ( while ( adults ( may ( be ( ( terrestrial or ) aquatic ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN egg) (CC and) (NN tadpole) (NNS stages)) (VP (VBP require) (NP (NP (NN water)) (, ,) (SBAR (IN while) (S (NP (NNS adults)) (VP (MD may) (VP (VB be) (ADJP (JJ terrestrial) (CC or) (JJ aquatic)))))))) (. .)))
The egg and tadpole stages require water, while adults may be terrestrial or aquatic.
(ROOT (S (NP (JJ Terrestrial) (NNS biomes)) (VP (VBP are) (VP (VBN associated) (PP (IN with) (NP (NN land))) (, ,) (SBAR (IN while) (S (NP (JJ aquatic) (NNS ones)) (VP (VBP are) (VP (VBN associated) (PP (IN with) (NP (NN water))))))))) (. .)))