( ( In ( this area ) ) ( , ( ( bite marks ) ( ( ( caused ( by ( fish predators ) ) ) ( being ( the ( most common ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN In) (NP (DT this) (NN area))) (, ,) (NP (NN bite) (NNS marks)) (VP (VBD caused) (PP (IN by) (NP (NN fish) (NNS predators))) (S (VP (VBG being) (NP (DT the) (RBS most) (JJ common))))) (. .)))
In this area, bite marks caused by fish predators being the most common.
(ROOT (S (NP (DT A) (JJR fewer) (NNS predators)) (VP (VBZ is) (ADJP (RBS most) (JJ likely) (S (VP (TO to) (VP (VB cause) (NP (NP (DT the) (NN number)) (PP (IN of) (NP (NP (NNS rabbits)) (VP (VBG living) (PP (IN in) (NP (DT an) (NN area))) (S (VP (TO to) (VP (VB increase))))))))))))) (. .)))
A fewer predators is most likely to cause the number of rabbits living in an area to increase.