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Pollution and its health hazards

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Pollution and its health hazards

Pollution is the process of making land, water, air and other parts of the environment dirty. Pollution is the presence in or introduction into the environment of a substance which has harmful or poisonous effects.

There are four major forms of pollution they are

  • Air pollution : Air pollution can take the form of greenhouse gases such as carbon dioxide or sulfur dioxide causing warming the planet through the greenhouse effect. This dangerous consequences of pollution lead to Acid rains, smog, heart problems, genetic problems etc., The release of chemicals and particulates into the atmosphere. Common gaseous pollutants include carbon monoxide, sulfur dioxide, chlorofluorocarbons (CFCs) and nitrogen oxides produced by industry and motor vehicles.
    • Smog health effects
      • Burning eyes throat, irritated  mucous membranes
      • Shortness of breath, wheezing , coughing
      • Asthama attacks, chest pain, when inhaling, increased risk of respiratory diseases.
  • Water pollution ;  Dangerous foreign substance in water resulting in water pollution. Water pollution is the contamination of water bodies, such as ponds, lakes, rivers, oceans. By the discharge of wastewater from commercial and industrial waste and untreated domestic sewage and chemical contaminants such as chlorine from treat sewage into surface waters; discharges of untreated domestic sewage, and chemical contaminants, such as chlorine, from treated sewage.
  • Soil pollution : Land can be polluted by household garbage and by industrial waste. Soil pollution is contamination of the soil that is caused due to over dumping, over utilization of soil and excess chemicals being injected into the soil. Poor disposal systems, excessive use of fertilizers and pesticides in agriculture, etc. cause soil pollution,
  • Noise pollution : harmful or annoying levels of noise.
  • Light pollution : Light pollution is the pollution caused due to use of too much light, especially in urban areas.

Harmful effects of pollutions

Air pollution effects : One of the biggest effects of air pollution is global warming. This dangerous consequences of pollution lead to Acid rains, smog, heart problems, genetic problems etc. It also causes other problems like acid rain, ozone layer depletion, etc.  Depletion of Ozone layer results in exposure to more harmful UV rays that have increased the occurrence of cancer among people. It can also make people get lung cancer, skin cancer etc.

Water pollution effects : Water pollution can lead to loss of water resources for humans and it can also cause depletion of water life. Hidden effects of pollution of water is the fact that the contaminants in water can damage the water life thereby affecting the entire food chain. Toxic substances polluting the water ultimately affect human health. Heavy metals like lead, mercury, cadmium causes various types of diseases. Mercury in water is transformed into methyl mercury. Minamata disease is occured due to consumption of methyl mercury contaminated fish.

Noise pollution effects :

  • Noise pollution affects both health and behavior.
  • Unwanted sound can damage psychological health.
  • Noise pollution can cause
    • Annoyance
    • Aggression
    • Hypertesion
    • High stress levels
    • Hearing loss
    • Sleep disturbances and other harmful effects.

Light pollution effects :

  • Degradation of photic habitat by artificial light.
  • Alteration of natural light levels in the outdoor environment

Soil pollution effects : The harmful effects of soil pollution may come from direct contact with polluted soil or from contact with other resources, such as water, that have come in direct contact with the polluted soil. The plants would absorb all the harmful chemicals from the soil, thereby spoiling or even poisoning the person’s food. Groundwater sources can also become contaminated due to soil pollution, which would cause water shortage problems as well.


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