Fact 1: Mating is generally preceded by courtship.

Fact 2: Normally, however, insect pheromones function to attract mates for reproduction.

Given the two facts above, answer the question "What uses pheromones for courtship?" with the following options: 
- bears
 - insects
 - fur seals
 - phytoplankton
 - bacteria
 - viruses
 - mammals
 - bees


 

  insects       