What is the primary environmental concern related to pesticide use?

• A. Pesticide residue in food products
• B. Pesticide runoff contaminating water sources
• C. The cost of pesticides to farmers
• D. Pesticides affecting only urban areas

Answer: (B)

The primary environmental concern related to pesticide use is pesticide runoff contaminating water sources. When pesticides are applied to crops, any excess can wash away with rain or irrigation into nearby streams, rivers, and groundwater. This runoff can lead to serious ecological consequences, including harm to aquatic life and the disruption of local ecosystems. It can also contaminate drinking water supplies, which poses a risk to human health and affects biodiversity.

While pesticide residue in food products is certainly a notable concern, it primarily deals with consumer safety rather than direct environmental impacts. The cost of pesticides to farmers relates more to economic factors than environmental issues. Lastly, the notion that pesticides affect only urban areas overlooks the widespread agricultural applications and implications in rural settings, which contribute significantly to the environmental problems associated with pesticide use. Therefore, the central environmental issue involves the broader impact of runoff and its effects on natural water systems.