Final answer:
The U.S. Environmental Protection Agency (EPA) sets tolerance guidelines for the use of pesticides on food, managing both conventional and organic agriculture regulatory aspects.
Step-by-step explanation:
The organization responsible for setting tolerance guidelines for the use of pesticides on food is the U.S. Environmental Protection Agency (EPA). The EPA regulates pesticides under the authority of the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA), and oversees the registration of all pesticides used in the country. This includes evaluating and deciding which pesticides can be used in organic as well as conventional agriculture. For foods to be labeled as organic in the U.S., they must meet the USDA's strict requirements, which exclude most synthetic pesticides. However, some naturally derived pesticides are permitted in organic farming, and like synthetic ones, they can also have harmful effects on the environment, including on beneficial insects like bees.