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What is pollution?
Types of pollution

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  1. 1.  What is Pollution?  Forms of pollution  Pollutants  Causes  Effects  Pollution control
  2. 2.  Pollution is the introduction of contaminants into the natural environment that cause adverse change.  Pollution can take the form of chemical substances or energy, such as noise, heat or light.  Pollutants, the components of pollution, can be either foreign substances/energies or naturally occurring contaminants.  Pollution is often classed as point source or nonpoint source pollution.
  3. 3.  Air pollution is the introduction of chemical0s, particulates, biological materials, or other harmful materials into the Earth's atmosphere, possibly causing disease, death to humans, damage to other living organisms such as food crops, or the natural or built environment.  The atmosphere is a complex natural gaseous system that is essential to support life on planet Earth. Stratospheric ozone depletion due to air pollution has long been recognized as a threat to human health as well as to the Earth's ecosystems.  Indoor air pollution (see Air log) and urban air quality are listed as two of the world’s worst toxic pollution problems in the 2008 Blacksmith Institute World's Worst Polluted Places report.
  4. 4.  Soil pollution is defined as the build-up in soils of persistent toxic compounds, chemicals, salts,  radioactive materials, or disease causing agents, which have adverse effects on plant growth and animal  health.  Soil is the thin layer of organic and inorganic materials that covers the Earth's rocky surface.  The organic portion, which is derived from the decayed remains of plants and animals, is concentrated  in the dark uppermost topsoil. The inorganic portion made up of rock fragments, was formed over  thousands of years by physical and chemical weathering of bedrock. Productive soils are necessary for  agriculture to supply the world with sufficient food.
  5. 5.  Noise pollution is the disturbing or excessive noise that may harm the activity or balance of human or animal life. The source of most outdoor noise worldwide is mainly caused by machines and transportation systems, motor vehicles, aircraft, and trains. Outdoor noise is summarized by the word environmental noise. Poor urban planning may give rise to noise pollution, since side- by-side industrial and residential buildings can result in noise pollution in the residential areas.  Indoor noise can be caused by machines, building activities, and music performances, especially in some workplaces. There is no great difference whether noise-induced hearing loss is brought about by outside (e.g. trains) or inside (e.g. music) noise.
  6. 6.  Water pollution is the contamination of water bodies (e.g. lakes, rivers, oceans, aquifers and groundwater). Water pollution occurs when pollutants are directly or indirectly discharged into water bodies without adequate treatment to remove harmful compounds.  Water pollution affects plants and organisms living in these bodies of water. In almost all cases the effect is damaging not only to individual species and populations, but also to the natural biological communities.
  7. 7.  Pollution causes global warming, death and diseases in both plants and animals.  Pollution refers to contamination which interferes with the natural balance of nature and makes water and air unfit for human use. Air pollution can cause acid rain which damages plants and harms animals.
  8. 8. 3. Global Warming : The emission of greenhouse gases particularly CO2 is leading to global warming. Every other day new industries are being set up, new vehicles come on roads and trees are cut to make way for new homes. All of them, in direct or indirect way lead to increase in CO2 in the environment. The increase in CO2 leads to melting of polar ice caps which increases the sea level and pose danger for the people living near coastal areas. 2. Human Health : The decrease in quality of air leads to several respiratory problems including asthma or lung cancer. Chest pain, congestion, throat inflammation, cardiovascular disease, respiratory disease are some of diseases that can be causes by air pollution. Water pollution occurs due to contamination of water and may pose skin related problems including skin irritations and rashes. Similarly, Noise pollution leads to hearing loss, stress and sleep disturbance. 1. Environment Degradation : Environment is the first casualty for increase in pollution weather in air or water. The increase in the amount of CO2 in the atmosphere leads to smog which can restrict sunlight from reaching the earth. Thus, preventing plants in the process of photosynthesis. Gases like Sulfur dioxide and nitrogen oxide can cause acid rain. Water pollution in terms of Oil spill may lead to death of several wildlife species.
  9. 9. A litter trap catches floating waste in the Yarra River, east-central Victoria, Australia  Pollution control is a term used in environmental management. It means the control of emissions and effluents into air, water or soil. Without pollution control, the waste products from consumption, heating, agriculture, mining, manufacturing, transportation and other human activities, whether they accumulate or disperse, will degrade the environment. In the hierarchy of controls, pollution prevention and waste minimization are more desirable than pollution control. In the field of land development, low impact development is a similar technique for the prevention of urban runoff.