Which sign might indicate the presence of hazardous materials due to its effect on the environment?

Dying or discolored vegetation is a significant indicator of the presence of hazardous materials because such changes in plant life often suggest that harmful substances are affecting the soil or surrounding area. When hazardous materials like chemicals or pollutants infiltrate the environment, they can disrupt the normal growth processes of plants, leading to browning or wilting. This can also affect the overall health of the ecosystem, as plants are foundational to environmental stability and food chains.

In contrast, new plant growth, healthy green grasses, or consistent plant coloration across all species typically indicate a stable and healthy environment. These conditions suggest that the area is not adversely affected by environmental contaminants, as plants are thriving and displaying normal growth patterns. Therefore, the visible signs of distress in vegetation, such as dying or discolored leaves, offer a clear and observable warning of potential environmental hazards.