Why is mixing and loading pesticides poses a significant hazard to the environment and the people who perform these tasks?

• A. Because of the concentrations and quantities of pesticides involved, accidental releases of pesticides at a mixing and loading site pose a high risk of ground and surface water contamination
• B. Because the pesticides degrade quickly in the air
• C. Because workers lack training
• D. Because contaminants are mainly solids that cause dust

Answer: (D)