List a potential effect of improper pesticide application.

• A. Reduced productivity of beneficial species
• B. Enhanced taste of agricultural products
• C. Harm to human health and environmental contamination
• D. Decreased pest resistance to chemicals

Answer: (C)

Improper pesticide application can lead to harm to human health and environmental contamination, making this answer the most accurate choice. When pesticides are misapplied—whether through overuse, improper timing, or incorrect technique—they can leave residues on food products, which may pose health risks to consumers. Additionally, drift can occur, where chemicals move off-target and affect non-target species, including beneficial insects, wildlife, and aquatic systems, leading to broader ecological damage.

Contamination of soil, water, and air can also occur as a result of improper application, which can disrupt ecosystems and harm local flora and fauna. Furthermore, excessive pesticide use can pollute water sources and negatively impact human health, particularly for vulnerable populations such as children and the elderly.

While the other options touch on important aspects of pest control, they do not emphasize the immediate and significant consequences of improper application like harm to health and environment does. For instance, while reduced productivity of beneficial species is a concern, the direct impact on human health and potential environmental disasters present a more urgent and pervasive issue.