Which of the following is a major environmental concern related to pesticide use?

A major environmental concern related to pesticide use encompasses the various ways these chemicals can adversely affect ecosystems and water quality. When considering the implications of pesticide application, it's crucial to recognize that runoff of pesticides can occur when rain or irrigation leads to surface water contamination. This runoff can carry harmful chemicals into nearby streams, rivers, and lakes, impacting aquatic life and drinking water supplies.

Additionally, leaching into groundwater is a significant issue, where pesticides can seep through the soil and contaminate underground water resources. This poses risks not only to agricultural areas but also to communities that depend on groundwater for drinking and irrigation.

Point-source pollution, while a more specific type of contamination originating from a single identifiable source, can also be relevant in the context of pesticide use, especially when pesticides are applied near water bodies.

Recognizing the connection between these environmental issues emphasizes the comprehensive impact of pesticide use and the necessity for careful management practices to mitigate these risks. Thus, identifying all these factors as significant environmental concerns highlights the complexity and urgency of addressing pesticide-related pollution.