What chemical element is found in pestasides mostly?

Question: What chemical element is found in pestasides mostly?
- Keywords:
  chemical,
  element,
  pesticide
Asked by TheWingedDagger101 to Matt on 20 Jun 2016.
- Matthew Hobbs answered on 20 Jun 2016:
  
  The most common elements in the pesticides I study are carbon, hydrogen, oxygen and nitrogen. These are also the most common elements present in the human body! The structure of the molecules makes a big difference.

Question: What chemical element is found in pestasides mostly?