Final answer:
The classification of pesticides requiring additional regulations due to potential environmental or applicator harm is 'Restricted Use Pesticides'. These are distinct from general use pesticides, organic pesticides, and synthetic pesticides.
Step-by-step explanation:
The classification of pesticides that may cause adverse effects on the environment and/or the applicator, unless subject to additional regulatory restrictions, is called Restricted Use Pesticides. These pesticides are only available to certified applicators who have undergone training to handle these more hazardous materials responsibly. By contrast, General Use Pesticides can be purchased and applied by the general public without special permits or training. Organic Pesticides are generally derived from natural materials or living organisms and are allowed in organic production with certain restrictions. Synthetic Pesticides, on the other hand, are man-made and may not be used in organic production unless they are specifically listed as exceptions.