( ( Evolution ( , ( microevolution ( , ( and macroevolution ) ) ) ) ) ( ( are ( defined ( by biologists ) ) ) . ) )
(ROOT (S (NP (NNP Evolution) (, ,) (NNP microevolution) (, ,) (CC and) (NNP macroevolution)) (VP (VBP are) (VP (VBN defined) (PP (IN by) (NP (NNS biologists))))) (. .)))
Evolution, microevolution, and macroevolution are defined by biologists.
(ROOT (S (NP (NP (NNP Evolution)) (SBAR (WHNP (WDT that)) (S (VP (VBZ occurs) (PP (IN over) (NP (NP (DT a) (JJ short) (NN period)) (PP (IN of) (NP (NN time))))))))) (VP (VBZ is) (VP (VBN known) (PP (IN as) (NP (NN microevolution))))) (. .)))