The USDA Center for Nutrition Policy and Promotion.
They created food pyramids and circles as well.
Hope this helps!
Answer:
Here are five important tips for preventing cross-contamination in your operation.
Implement a personal hygiene program. ...
Remind employees to wash their hands. ...
Use separate equipment. ...
Clean and sanitize all work surfaces. ...
Purchase prepared food.
Explanation:
(copied from Google)