( ( ( ( ( There ( are ( over ( ( 7,400 species ) ( of amphibians ) ) ) ) ) , ) and ) ( they ( ( ( inhabit ( ( all continents ) ( except Antarctica ) ) ) , ) ( living ( in ( ( varied habitats ) ( such ( as ( rainforests ( , ( rivers ( and ( streams ( , ( deserts ( and ( alpine environments ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (EX There)) (VP (VBP are) (PP (IN over) (NP (NP (CD 7,400) (NNS species)) (PP (IN of) (NP (NNS amphibians))))))) (, ,) (CC and) (S (NP (PRP they)) (VP (VBP inhabit) (NP (NP (DT all) (NN continents)) (PP (IN except) (NP (NNP Antarctica)))) (, ,) (S (VP (VBG living) (PP (IN in) (NP (NP (JJ varied) (NNS habitats)) (PP (JJ such) (IN as) (NP (NNS rainforests) (, ,) (NNS rivers) (CC and) (NN streams) (, ,) (NNS deserts) (CC and) (NN alpine) (NNS environments))))))))) (. .)))
There are over 7,400 species of amphibians, and they inhabit all continents except Antarctica, living in varied habitats such as rainforests, rivers and streams, deserts and alpine environments.
(ROOT (S (NP (NNP Antarctica)) (VP (VBZ is) (NP (NP (DT the) (JJ only) (NN continent)) (PP (IN without) (NP (NNS amphibians))))) (. .)))