| Answer | Crossword Clue |
|---|---|
| pheromones | PHEROMONE, a chemical substance secreted by an animal that influences the behaviour of others of its species |
| pheromone | a chemical substance secreted by an animal that influences the behaviour of others of its species |
| pheromones | A chemical substance produced and released into the environment by an animal, esp. a mammal or an insect, affecting the behavior or physiology of others of its species |
| pheromone | chemical substance released by an animal that influences the behavior of other members of the species |
