( ( ( Demonstrate ( important ( biological ( and ( environmental ( selection factors ) ) ) ) ) ) ( that ( ( influence evolution ) ( by ( natural selection ) ) ) ) ) . )
(ROOT (S (VP (VB Demonstrate) (NP (JJ important) (JJ biological) (CC and) (JJ environmental) (NN selection) (NNS factors)) (SBAR (IN that) (S (VP (VBP influence) (NP (NN evolution)) (PP (IN by) (NP (JJ natural) (NN selection))))))) (. .)))
Demonstrate important biological and environmental selection factors that influence evolution by natural selection.
(ROOT (S (NP (NNP Community) (NNS interactions)) (VP (VBP are) (NP (NP (JJ important) (NNS factors)) (PP (IN in) (NP (JJ natural) (NN selection))))) (. .)))