sentence2_structure: Strong odor<>helps<>some animals defend themselves against predators$$$some animals<>defend<>themselves
sentence1: Slow locomotion and strong body odor (both characteristic for hominids and humans) are other features often employed by aposematic species to advertise their non-profitability for potential predators.
sentence2: Strong odor helps some animals defend themselves against predators.
question: Which characteristic helps some animals defend themselves against predators?