What term describes contamination of the atmosphere by harmful gases, particles, or chemicals?

• A. Water pollution
• B. Air pollution
• C. Noise pollution
• D. Soil contamination

Answer: (B)

Air pollution is the contamination of the atmosphere by harmful gases, particles, or chemicals. It happens when pollutants are released into the air faster than natural processes can remove or dilute them, leading to health problems and environmental damage. Common pollutants include sulfur dioxide, nitrogen oxides, carbon monoxide, fine particulate matter, and volatile organic compounds, coming from sources like vehicle exhaust, power plants, industrial processes, and burning fuels. Health effects can include respiratory and cardiovascular issues, aggravated asthma, and other lung problems, while environmental impacts include smog, acid rain, reduced visibility, and climate-related effects from greenhouse gases and aerosols. Preventing it involves reducing emissions at the source, switching to cleaner energy, improving filtration and catalytic controls, promoting public transit and energy efficiency, and enforcing air quality standards. Water pollution, noise pollution, and soil contamination describe contaminants in water, sound, and soil, respectively.