Water Pollution
W aterpollution occurs when a body of water is adversely affected due to the addition of large amounts of materials to the water. The sources of water pollution are categorized as being a point source or a non-source point of pollution. Point sources of pollution occur when the polluting substance is emitted directly into the waterway. A pipe spewing toxic chemicals directly into a river is an example. A non-point source occurs when there is runoff of pollutants into a waterway, for instance when fertilizer from a field is carried into a stream by surface runoff.
The atmosphere is a complex dynamic natural gaseous system that is essential to support life on planet
Earth.
Stratospheric ozone depletiondue to air pollution has long been recognized as a threat to human health as well as to the Earth's
ecosystems.
Noise pollution is excessive, displeasing human, animal or machine-created environmental noise that disrupts the activity or balance of human or animal life. The word noise comes from the Latin word nauseas, meaning seasickness.Indoor air pollution and urban air quality are listed as two of the world's worst pollution problems in the 2008
Blacksmith Institute World's
The source of most outdoor noise worldwide is mainly construction and transportation systems, including motor vehicle noise, aircraft noiseand rail noise.[1][2] 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 area. Worst Polluted Places report.
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