How does populated area being more polluted?

Populated areas tend to be more polluted due to higher concentrations of human activity, including transportation, industrial processes, and energy consumption. These activities release pollutants such as carbon emissions, particulate matter, and chemicals into the air and water. Additionally, dense populations generate more waste, which can overwhelm local waste management systems, leading to environmental contamination. Consequently, the cumulative effects of these factors contribute to higher pollution levels in urban settings compared to less populated regions.