( ( ( The ( second type ) ) ( of response ) ) ( ( is ( positive feedback ) ) . ) )
(ROOT (S (NP (NP (DT The) (JJ second) (NN type)) (PP (IN of) (NP (NN response)))) (VP (VBZ is) (NP (JJ positive) (NN feedback))) (. .)))
The second type of response is positive feedback.
(ROOT (S (NP (JJ Positive) (NN feedback)) (VP (VP (VBZ intensifies) (NP (NP (DT a) (NN change)) (PP (IN in) (NP (NP (DT the) (NN body) (POS 's)) (JJ physiological) (NN condition))))) (CONJP (RB rather) (IN than)) (VP (VBG reversing) (NP (PRP it)))) (. .)))