While these have less of an effect on humans today,our ancestors smelled ________ that were secreted by other members of the species.Some of these were intended to attract sexual mates.
A) particles
B) molecules
C) pheromones
D) odors

Question

Quizplus · Accepted Answer

Pheromones are chemicals secreted by animals to communicate with other members of the same species. In some cases, they can be used to attract sexual mates.

While These Have Less of an Effect on Humans Today,our