( They ( ( ( ( live ( in ( open habitat ) ) ) and ) ( run ( to ( ( ( escape predators ) ( rather than ) ) ( ( hiding ( in ( the woods ) ) ) ( like ( ( the rabbit ) does ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP They)) (VP (VP (VBP live) (PP (IN in) (NP (JJ open) (NN habitat)))) (CC and) (VP (VBP run) (S (VP (TO to) (VP (VP (VB escape) (NP (NNS predators))) (CONJP (RB rather) (IN than)) (VP (VBG hiding) (PP (IN in) (NP (DT the) (NNS woods))) (SBAR (IN like) (S (NP (DT the) (NN rabbit)) (VP (VBZ does)))))))))) (. .)))
They live in open              habitat and run to escape predators rather than hiding in the woods              like the rabbit does.
(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.