( ( Altricial species ) ( ( ( ( are ( relatively ( helpless ( at birth ) ) ) ) and ) ( require ( considerable ( parental ( ( care and ) protection ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Altricial) (NNS species)) (VP (VP (VBP are) (ADJP (RB relatively) (JJ helpless) (PP (IN at) (NP (NN birth))))) (CC and) (VP (VBP require) (NP (JJ considerable) (JJ parental) (NN care) (CC and) (NN protection)))) (. .)))
Altricial species are relatively helpless at birth and require considerable parental care and protection.
(ROOT (S (NP (JJ Altricial) (NNS organisms)) (VP (VP (VBP are) (ADJP (JJ helpless) (PP (IN at) (NP (NN birth))))) (CC and) (VP (VBP require) (NP (NP (NNS lots)) (PP (IN of) (NP (NN help)))) (PP (IN from) (NP (PRP$ their) (NNS parents))))) (. .)))