Air pollution stems from the addition of unnatural compounds and toxins through indirect and direct mechanisms. Direct sources of air pollution include electricity, fuels and transportation, while indirect sources are go... More »

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Air pollution occurs when the air contains pollutants such as gases, fumes and dust in harmful amounts. Air pollution can be harmful to the health of humans and animals if left unchecked. More »

Air pollution can cause a variety of illnesses in humans, including asthma, lung cancer, heart disease and even reproductive and developmental disorders. It can also compromise the immune system by overworking the respir... More »

Human waste contaminates the soil, air and water with toxins, chemicals and disease-causing bacterial agents. Human waste, including both organic and synthetic waste substances, can quickly threaten the surrounding envir... More »

Some of the effects of land pollution include soil pollution, negative environmental impacts, health hazards and air pollution. Another effect of land pollution includes unusual weather activity, such as acid rain. More »

Air pollution occurs when the air contains pollutants such as gases, fumes and dust in harmful amounts. Air pollution can be harmful to the health of humans and animals if left unchecked. More »

The effects of air pollution include acidification, eutrophication, ground-level ozone and particulate matter. Acidification occurs during a chemical reaction with air pollutants that causes acid rain, and it affects the... More »