( ( If ( ( ( the odor ) ( of ( the predator ) ) ) ( is ( strong enough ) ) ) ) ( , ( ( then ( the wasps ) ) ( ( will attack ) . ) ) ) )
(ROOT (S (SBAR (IN If) (S (NP (NP (DT the) (NN odor)) (PP (IN of) (NP (DT the) (NN predator)))) (VP (VBZ is) (ADJP (JJ strong) (RB enough))))) (, ,) (NP (RB then) (DT the) (NNS wasps)) (VP (MD will) (VP (VB attack))) (. .)))
If the odor of the predator is strong enough, then the wasps will attack.
(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.