( ( Aromatic compounds ) ( ( have ( ( strong ( , characteristic ) ) odors ) ) . ) )
(ROOT (S (NP (JJ Aromatic) (NNS compounds)) (VP (VBP have) (NP (ADJP (JJ strong) (, ,) (JJ characteristic)) (NNS odors))) (. .)))
Aromatic compounds have strong, characteristic odors.
(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.