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This pollution looks like soot, containing millions of tiny particles, floating in the air.Another common type of air pollution is dangerous gases, such as sulfur dioxide, carbon monoxide, nitrogen oxides and chemical vapors.According to National Oceanic and Atmospheric Administration (NOAA), 80% of pollution in marine environment comes from the land through sources like runoff.
For example, sewage causes pathogens to grow, while organic and inorganic compounds in water can change the composition of the precious resource.
According to the EPA, low levels of dissolved oxygen in the water are also considered a pollutant.
This makes the water hold less oxygen, which can kill fish and wildlife.
The sudden change of temperature in the body of water can also kill fish.
Air pollution occurs when things that aren't normally there are added to the air.
A common type of air pollution happens when people release particles into the air from burning fuels.According to the University of Georgia, it is estimated that around half of the water withdrawn from water systems in the United States each year is used for cooling electric power plants."In nearly all cases, 90% of this water is returned to its source, where it can raise the water temperature in an area immediately surrounding the water discharge pipe.Dissolved is caused by the decomposition of organic materials, such as sewage introduced into the water. The artificial warming of water is called thermal pollution.It can happen when a factory or power plant that is using water to cool its operations ends up discharging hot water.Worldwide, nearly 2 billion people drink contaminated water that could be harmful to their health.Land can become polluted by household garbage and by industrial waste. A little over half of the waste — 136 million tons— was gathered in landfills. Organic material was the largest component of the garbage generated, the EPA said.Hazardous waste is any liquid, solid or sludge waste that contain properties that are dangerous of potentially harmful to human health or the environment.Industries generate hazardous waste from mining, petroleum refining, pesticide manufacturing and other chemical production.Water pollution is any contamination of water with chemicals or other foreign substances that are detrimental to human, plant, or animal health.These pollutants include fertilizers and pesticides from agricultural runoff; sewage and food processing waste; lead, mercury, and other heavy metals; chemical wastes from industrial discharges; and chemical contamination from hazardous waste sites.