Viewers of this slide show learn that pesticides used on food crops can be harmful, but that there are certain allowable levels that should not be hazardous. They find out the rigorous process of inspection that meat must go through before being sold to the public. Additionally, they learn about food additives: hormones, antibiotics, and preservatives. The last segment of the slide show delves into different methods of food preservation. Use this in a health class to help teens understand where their food comes from.