( ( ( ( ( ( ( Reptiles ( ( reproduce sexually ) ( through ( internal fertilization ) ) ) ) ; ) ( ( some species ) ( are ovoviviparous ) ) ) ( -LRB- ( ( lay eggs ) -RRB- ) ) ) and ) ( others ( are ( viviparous ( -LRB- ( ( live birth ) -RRB- ) ) ) ) ) ) . )
(ROOT (S (S (S (NP (NNS Reptiles)) (VP (VB reproduce) (ADVP (RB sexually)) (PP (IN through) (NP (JJ internal) (NN fertilization))))) (: ;) (S (NP (DT some) (NNS species)) (VP (VBP are) (ADJP (JJ ovoviviparous))))) (PRN (-LRB- -LRB-) (VP (VB lay) (NP (NNS eggs))) (-RRB- -RRB-)) (CC and) (S (NP (NNS others)) (VP (VBP are) (NP (NP (NNS viviparous)) (PRN (-LRB- -LRB-) (NP (JJ live) (NN birth)) (-RRB- -RRB-))))) (. .)))
Reptiles reproduce sexually through internal fertilization ; some species are ovoviviparous (lay eggs) and others are viviparous (live birth).
(ROOT (S (NP (NNS Reptiles)) (ADVP (RB typically)) (VP (VB reproduce) (ADVP (RB sexually))) (. .)))