1. Air pollution.
Air pollution occurs when harmful materials, including matter, gases, and chemicals, contaminate the air we breathe. Major sources of air pollution include industrial materials (fuel, oil), vehicle exhaust, burning of fossil fuels, and open waste burning. The downsides of air pollution are a lot, leading to respiratory illnesses, cardiovascular (heart) diseases, and environmental harm. Mitigating or reducing air pollution requires using more cleaner energy sources, using stricter emission standards, promoting sustainable transportation systems, such as electric cars, and using pollution control technologies.