( Lemmings ( ( are ( herbivorous ( ( heterotrophs and ) ( eat ( plants ( that ( grow ( in ( ( the tundra ) ( in ( northern Alaska ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Lemmings)) (VP (VBP are) (ADJP (JJ herbivorous) (SBAR (S (VP (VP (VBZ heterotrophs)) (CC and) (VP (VBP eat) (NP (NP (NNS plants)) (SBAR (WHNP (WDT that)) (S (VP (VBP grow) (PP (IN in) (NP (NP (DT the) (NN tundra)) (PP (IN in) (NP (JJ northern) (NNP Alaska))))))))))))))) (. .)))
Lemmings are herbivorous heterotrophs and eat plants that grow in the tundra in northern Alaska.
(ROOT (S (NP (NNS Herbivores)) (VP (VBP are) (NP (NP (NNS heterotrophs)) (SBAR (WHNP (WDT that)) (S (VP (VBP eat) (NP (UCP (ADJP (JJ only)) (CC or) (ADVP (RB mainly))) (NNS plants))))))) (. .)))