Describe different types of pollution
Answers
Answer:
The term "pollution" refers to any substance that negatively impacts the environment or organisms that live within the affected environment. The five major types of pollution include: air pollution, water pollution, soil pollution, light pollution, and noise pollution.
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Air pollution
Air is the most polluted environmental resource. It is the introduction of harmful substances in the air that results in detrimental impacts to the environmental and humanity. Air pollution reduces air quality by making it unclean or contaminated.
It occurs when harmful substances such as foreign gases, odours, dust, or fumes are released in the air at levels that can harm the comfort or health of animals and humans, or even destroy plant life. Air pollution results from both human and natural activities.
It is caused by emissions from manufacturing industries and power plants, vehicular emissions, smoking, natural events such as volcanic eruptions and wildfire, and burning of waste materials such as wood, rubber and plastics. The common air pollutants include hydrocarbons, volatile organic compounds (VOCs), dust particles, carbon monoxide, sulfur oxides, particulate matter, chlorofluorocarbons (CFCs), and nitrogen oxides.
Water pollution
Water pollution is the act of contaminating water bodies namely rivers, oceans, lakes, streams, aquifers, and groundwater. It occurs when foreign harmful materials like chemicals, waste matter, or contaminated substances are directly or indirectly discharged into water bodies. Any alterations in the chemical, physical, or biological water properties qualify as water pollution.
Very often, the primary contributors to water pollution are human activities since they introduce substances that contaminate the water with harmful chemicals and toxic materials. Water pollution is categorized into point source, non-point source, and groundwater. Point source water pollution occurs when the contaminants enter a water body from a single identifiable source while non-point source occurs as a result of cumulative effects of different amounts of contaminants.
Land Pollution
Land pollution is the destruction or decline in quality of the earth’s land surfaces in term of use, landscape and ability to support life forms. Many times, it is directly and indirectly caused by human activities and abuse of land resources. Land pollution takes place when waste and garbage is not disposed off in the right manner and as such, introduces toxins and chemicals on land.
It also occurs when people dump chemical products to soils in the form of herbicides, fertilizers, pesticides, or any other form of the consumer by-products. Mineral exploitation equally leads to the decline in quality of the earth’s land surfaces. In this regard, it has grave consequences for human health, plant life, and soil quality. Acid rain, construction sites, solid waste, mineral exploitation, agricultural chemicals, and deforestations are the primary causes of land pollution.
Soil Pollution
Soil pollution takes place when chemical pollutants contaminate the soil or degraded by acts such as mining, clearance of vegetation cover, or topsoil erosion. Usually, it happens when human activities directly or indirectly introduce destructive chemicals, substances, or objects into the soil in a way that causes damage to the immediate earthly environment.
As a consequence, soil losses its value of natural minerals and nutrients compositions. Soil degradation also contributes to soil pollution, and it occurs as a result of over-grazing, over-farming, or mining activities. The notable causes of soil pollution include agricultural farming activities, waste dumping on land, industrial activities, mining, and acid rain. Lose of wildlife habitat, soil erosion, reduced crop yields, contamination of food, and desertification are the precise consequences of soil pollution
Noise Pollution
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Noise pollution is mostly an undesirable sound or sound which generates horrible discomfort on the ears. It is measured in decibels (dB) and sound levels beyond 100 dB can cause permanent hearing loss. The industrial sound limit according to the World Health Organization (WHO) is 75 dB. In the contemporary society, noise has become a permanent aspect owing to the daily activities such as transportation including airports, traffic and railroads, industrial manufacturing, construction works, and concerts.
Thermal Pollution
Thermal pollution occurs when water bodies are degraded in terms of altering their temperatures. It commonly happens when people or industries undertake activities that suddenly decrease or increase the temperature of a natural water body which may include lakes, rivers, oceans or ponds.
Thermal pollution is currently a huge menace and is mainly influenced by power plants and industrial manufacturers that use water as a coolant. Urban stormwater runoff from parking lots and roads also discharges water of elevated temperatures into adjacent water bodies.
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