Human-made air pollution
We all know about Global Warming, but what causes it? There are 3 main reasons:
1. GREENHOUSE GASSES: carbon dioxide, nitrous oxide, methane and flurinated gasses. It causes the increase of smog, rises in mold and in more pollen.
2. SMOG: it causes health problems.
It is divided into 2 types; sulfurous, made of sulfur oxide (burning coal) and photochemical, is the chemical reaction of sunlight, nitrogen oxides and volatile organic compounds in the atmosphere.
3. TOXIC POLLUTANTS: gases like hydrogen chloride, benzene or toluene, dioxin, or compounds like asbestos, or elements such as cadmium, mercury and chromium.