( Behavior ( ( is ( a ( quicker ( way ( to ( ( adapt ( to ( the environment ) ) ) ( than ( ( changing ( the ( gene code ) ) ) ( to adapt ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Behavior)) (VP (VBZ is) (NP (DT a) (JJR quicker) (NN way) (S (VP (TO to) (VP (VB adapt) (PP (TO to) (NP (DT the) (NN environment))) (PP (IN than) (S (VP (VBG changing) (NP (DT the) (NN gene) (NN code)) (S (VP (TO to) (VP (VB adapt)))))))))))) (. .)))
Behavior is a quicker way to adapt to  the environment than changing the gene code to adapt.
(ROOT (S (NP (JJ Learned) (NN behavior)) (VP (VBZ is) (ADJP (JJ adaptive)) (SBAR (IN because) (S (NP (PRP they)) (VP (VBP are) (ADJP (JJ flexible)) (, ,) (S (ADJP (JJ capable) (PP (IN of) (S (VP (VBG changing) (SBAR (IN if) (S (NP (DT the) (NN environment)) (VP (VBZ changes))))))))))))) (. .)))