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What is a major concern associated with pesticide drift?

  1. Reduced efficacy of the pesticide

  2. Contamination of local water supplies

  3. Off-target damage to vegetation and people

  4. Increased pest resistance

The correct answer is: Off-target damage to vegetation and people

Pesticide drift is a significant concern because it refers to the airborne movement of pesticide particles away from the intended application site, potentially leading to unintended exposure. When pesticides drift, they can harm non-target organisms, including beneficial plants and wildlife. This off-target damage can extend to vegetation that is not intended to be treated, resulting in visible damage or death to those plants. Furthermore, people living near agricultural areas may be exposed to these chemicals, leading to potential health risks. Symptoms of exposure can range from mild (skin irritation) to severe (respiratory issues), making the safety of the surrounding community a critical issue when discussing pesticide applications. Addressing the other choices: while reduced efficacy, contamination of water supplies, and increased pest resistance are valid concerns related to pesticide use, they don't capture the immediate danger posed by unintended exposure through drift, which can have immediate adverse effects on both the environment and human health. Hence, off-target damage to vegetation and people is the most pressing concern associated with pesticide drift.