( ( If ( ( a species ) ( ( ( is introduced ) and ) ( attacks ( a ( native species ) ) ) ) ) ) ( , ( ( ( the biodiversity ) ( in ( that area ) ) ) ( ( can ( change dramatically ) ) . ) ) ) )
(ROOT (S (SBAR (IN If) (S (NP (DT a) (NNS species)) (VP (VP (VBZ is) (VP (VBN introduced))) (CC and) (VP (VBZ attacks) (NP (DT a) (JJ native) (NN species)))))) (, ,) (NP (NP (DT the) (NN biodiversity)) (PP (IN in) (NP (DT that) (NN area)))) (VP (MD can) (VP (VB change) (ADVP (RB dramatically)))) (. .)))
If a species is introduced and attacks a native species, the biodiversity in that area can change dramatically.
(ROOT (S (NP (NNP Biodiversity)) (VP (VBZ is) (NP (NP (DT a) (NN measurement)) (PP (IN of) (NP (NP (DT the) (NN amount)) (PP (IN of) (NP (NP (NN variation)) (PP (IN of) (NP (NP (DT the) (NN species)) (PP (IN in) (NP (DT a) (VBN given) (NN area))))))))))) (. .)))