( ( The ( adult iguanas ) ) ( ( ( ( are not ) ( at ( risk ( from ( ( very many ) predators ) ) ) ) ) ( because ( they ( can ( ( defend themselves ) ( with ( ( ( their ( sharp teeth ) ) and ) ( strong tails ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (JJ adult) (NNS iguanas)) (VP (VBP are) (RB not) (PP (IN at) (NP (NP (NN risk)) (PP (IN from) (NP (ADJP (RB very) (JJ many)) (NNS predators))))) (SBAR (IN because) (S (NP (PRP they)) (VP (MD can) (VP (VB defend) (NP (PRP themselves)) (PP (IN with) (NP (NP (PRP$ their) (JJ sharp) (NNS teeth)) (CC and) (NP (JJ strong) (NNS tails))))))))) (. .)))
The adult iguanas are not at risk from very many predators because they can defend themselves with their sharp teeth and strong tails.
(ROOT (S (NP (JJ Strong) (NN odor)) (VP (VBZ helps) (S (NP (DT some) (NNS animals)) (VP (VB defend) (NP (PRP themselves)) (PP (IN against) (NP (NNS predators)))))) (. .)))
Strong odor helps some animals defend themselves against predators.