Fact 1: Sex hormones are chemical messengers that control sexual development and reproduction.

Fact 2: Androgens are male sex hormones.

Given the two facts above, answer the question "androgens and what kind of messengers?" with the following options: 
- animals
 - interact
 - organ
 - humans
 - chemical
 - PDAs
 - allow growth
 - kinetic


 

     chemical    