smog...
Ozone at ground is a pollutant. It causes irritation. Irritation and skin burns are also some causes.
Pollution occurs when a substance is introduced into a waterway, soil, or air that is not a natural component. People are the cause of a majority of pollution problems.
Pollution Degree 1: No pollution or only dry, nonconductive pollution occurs. The pollution has no effect. Pollution Degree 2: Normally only nonconductive pollution occurs. Temporary conductivity caused by condensation is to be expected. Pollution Degree 3: Conductive pollution or dry nonconductive pollution that becomes conductive due to condensation occurs. To be found in industrial environment or construction sites (harsh environments). Pollution Degree 4: The pollution generates persistent conductivity caused by conductive dust, rain, or snow.
Physical pollution
how do particles move in the ground when an earthquake occurs
how do particles move in the ground when an earthquake occurs
The rate at which air pollution occurs depends on the area. Some areas around the world have faster pollution rates.
Visual pollution occurs when you can see either physical damage to the environment, or pollution in the form of smog, litter, sludge, etc.
Odor pollution occurs when there is a repugnant smell within the immediate environment. Odor pollution is a nuisance to anyone who lives or works in that environment.
Water pollution is the contamination of water bodies (e.g. lakes, rivers, oceans, aquifers and groundwater). Water pollution occurs when pollutants are discharged directly or indirectly into water bodies without adequate treatment to remove harmful compounds
Water pollution occurs when contaminants are released into the water body such as the ocean or rivers. The water mainly occurs when we discharged untreated sewage or waste into the water. The main causes of water pollution are industrial wastes, house hold waste and chemicals. The used water of a community is called waste water or sewage. If it is not treated before being discharged into waterways, serious pollution is the result. Water pollution also occurs when rain water runoff from urban and industrial areas and from agricultural land and mining operations makes its way back to receiving waters (river, lake or ocean) and into the ground.
these problem may occurs by over population: Air pollution lack of food noise pollution water pollution