write about different kinds of pollution sound pollution pollutants harmful effects control measures
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Environmental pollution is currently the biggest challenge facing the word today.
There are many sources of pollution and each one has its own effect on the environment and living organisms. This article will discuss the causes and effects of the different kinds of pollution.
Causes
The causes of pollution are not just limited to fossil fuels and carbons emissions. There are many other types of pollution including chemical pollution into bodies of water and soil through improper disposal practices and agricultural activities, and noise and light pollution created by cities and urbanization as a result of population growth.
1. Air Pollution
There are two types of air pollutants, primary and secondary. Primary pollutants are emitted directly from their source, while secondary pollutants are formed when primary pollutants react in the atmosphere.
The burning of fossil fuels for transportation and electricity produces both primary and secondary pollutants and is one of the biggest sources of air pollution.
The fumes from car exhausts contain dangerous gases and particulates including hydrocarbons, nitrogen oxides, and carbon monoxide. These gases rise into the atmosphere and react with other atmospheric gases creating even more toxic gases.
According to The Earth Institute, the heavy use of fertilizer for agriculture is a major contributor of fine-particulate air pollution, with most of Europe, Russia, China, and the United States being affected. The level of pollution caused by agricultural activities is thought to outweigh all other sources of fine-particulate air pollution in these countries.
Ammonia is the primary air pollutant that comes from agricultural activities. Ammonia enters the air as a gas from concentrated livestock waste and fields that are over fertilized.
This gaseous ammonia then combines with other pollutants such as nitrogen oxides and sulfates created by vehicles and industrial processes, to create aerosols. Aerosols are tiny particles that can penetrate deep into the lungs and cause heart and pulmonary disease.
Other agricultural air pollutants include pesticides, herbicides, and fungicides. All of which also contribute to water pollution.
2. Water Pollution
Nutrient pollution is caused by wastewater, sewage, and fertilizers. The high levels of nutrients in these sources end up in bodies of water and promote algae and weed growth, which can make the water undrinkable and depleted oxygen causing aquatic organisms to die.
Pesticides and herbicides applied to crops and residential areas concentrate in the soil and are carried to the groundwater by rainwater and runoff. For these reasons anytime someone drills a well for water it must be checked for pollutants.
Industrial waste is one of the main causes of water pollution, by creating primary and secondary pollutants including sulphur, lead and mercury, nitrates and phosphates, and oil spills.
In developing countries around 70% of their solid waste is dumped directly into the ocean or sea. This causes serious problems including the harming and killing of sea creatures, which ultimately affects humans.
3. Land & Soil Pollution
Land pollution is the destruction of land as a result of human’s activities and the misuse of land resources. This occurs when humans apply chemicals such as pesticides and herbicides to the soil, dispose of waste improperly, and irresponsibly exploit minerals through mining.
Soil is also polluted through leaking underground septic tanks, sewage systems, the leaching of harmful substances from landfill, and direct discharge of waste water by industrial plants into rivers and oceans.
Rain and flooding can bring pollutants from other already polluted lands to soil at other locations.
Over-farming and over-grazing by agricultural activities causes the soil to lose its nutrient value and structure causing soil degradation, another type of soil pollution.
Landfills can leach harmful substances into the soil and water ways and create very bad smells, and breeding grounds for rodents that transmit diseases.
4. Noise & Light Pollution
Noise is considered an environmental pollutant caused by household sources, social events, commercial and industrial activities, and transportation.
Light pollution is caused by the prolonged and excessive use of artificial lights at night that can cause health problems in humans and disrupt natural cycles, including wildlife activities. Sources of light pollution include electronic billboards, night sports grounds, street and car lights, city parks, public places, airports, and residential areas.
Effects
The effects of pollution can be seen every day, all around you. Pollution is destroying ecosystems and drinking water, and wreaking havoc on human and environmental health.
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