What type of substance is typically associated with air pollution?

Air pollution is a complex issue that often involves a variety of harmful substances resulting from both natural and human activities. Fossil fuels, heavy metals, and volatile organic compounds are all significant contributors to air pollution.

Fossil fuels, when burned for energy, release pollutants such as sulfur dioxide, nitrogen oxides, and particulate matter into the atmosphere, leading to smog and respiratory problems.

Heavy metals, such as lead and mercury, can be released into the air from industrial processes, mining, and the burning of waste. These metals can accumulate in the environment and pose serious health risks to humans and wildlife.

Volatile organic compounds (VOCs) are organic chemicals that can easily evaporate into the air. They are emitted by a variety of sources, including vehicle exhaust, industrial processes, and the use of certain household products. VOCs can contribute to ground-level ozone formation and cause various health issues.

Since all of these substances contribute to air pollution, the answer indicating that all three types are associated with air pollution is correct. This illustrates the multifaceted nature of air pollution and highlights the range of materials that can have detrimental effects on air quality and human health.