( This ( ( would ( seem ( to ( support ( ( the ( phyletic ( gradualism model ) ) ) ( of ( ( macroevolution , ) ( ( in which ) ( ( established populations ) ( slowly ( ( ( change ( over ( ( a ( long period ) ) ( of time ) ) ) ) , ) ( adapting ( to ( environmental influences ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT This)) (VP (MD would) (VP (VB seem) (S (VP (TO to) (VP (VB support) (NP (NP (DT the) (JJ phyletic) (NN gradualism) (NN model)) (PP (IN of) (NP (NP (NN macroevolution)) (, ,) (SBAR (WHPP (IN in) (WHNP (WDT which))) (S (NP (JJ established) (NNS populations)) (VP (ADVP (RB slowly)) (VBP change) (PP (IN over) (NP (NP (DT a) (JJ long) (NN period)) (PP (IN of) (NP (NN time))))) (, ,) (S (VP (VBG adapting) (PP (TO to) (NP (JJ environmental) (NNS influences)))))))))))))))) (. .)))
This would seem to support the phyletic gradualism model of macroevolution, in which established populations slowly change over a long period of time, adapting to environmental influences.
(ROOT (S (NP (NNP Macroevolution)) (VP (VBZ happens) (SBAR (WHADVP (WRB when)) (S (NP (NP (NNS forces)) (PP (IN of) (NP (NN evolution)))) (VP (VBP work) (PP (IN over) (NP (NP (DT a) (JJ long) (NN period)) (PP (IN of) (NP (NN time))))))))) (. .)))