Which of the following is an environmental impact of overpopulation?

Overpopulation exerts significant pressure on environmental resources, leading to detrimental effects such as groundwater contamination. As populations grow, there is an increased demand for agricultural production, infrastructure, and waste management, which can overwhelm local ecosystems. In densely populated areas, improper waste disposal, agricultural runoff, and industrial activities can leach pollutants into groundwater systems, leading to contamination. This ultimately compromises water quality, affecting both human health and local biodiversity.

In contrast, increased food production quality, habitat restoration, and reduction in fossil fuel usage do not typically occur as direct consequences of overpopulation. Instead, they might suggest a focus on sustainability and environmental health, which can be undermined by the pressures of a growing population. Groundwater contamination serves as a clear example of the negative impact that can arise from the unchecked growth of human populations and their resource demands.