POLLUTION

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P ollution A threat to life Submitted by: Nitika kaushik VI-C 24

Types of pollution:

Types of pollution Air Pollution Water Pollution Land Pollution Noise Pollution Radioactive Pollution Thermal Pollution

Air pollution :

Air pollution Air pollution is the introduction of chemicals, particulate matter, or biological materials that cause harm or discomfort to humans or other living organisms, or cause damage to the natural or built environment , into the atmosphere A substance in the air that can cause harm to humans and the environment is known as an air pollutant. Pollutants can be in the form of solid particles, liquid droplets, or gases. In addition, they may be natural or man-made. [2]

Water pollution:

Water pollution Water pollution is the contamination of water bodies(e.g . lakes, rivers, oceans and groundwater ). Water pollution occurs when pollutants are discharged directly or indirectly into water bodies without adequate treatment to remove harmful compounds. Water pollution affects plants and organisms living in these bodies of water; and, in almost all cases the effect is damaging not only to individual species and populations, but also to the natural biological communities.

Land pollution:

Land pollution Land pollution is the degradation of Earth's land surfaces often caused by human activities and their misuse of land resources. It occurs when waste is not disposed properly. Health hazard disposal of urban and industrial wastes, exploitation of minerals, and improper use of soil by inadequate agricultural practices are a few factors Urbanization and industrialization are major causes of land pollution. The Industrial Revolution set a series of events into motion which destroyed natural habitats and polluted the environment, causing diseases in both humans and other species of animals.

Noise pollution:

Noise pollution 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. The source of most outdoor noise worldwide is mainly construction and transportation systems, including motor vehicle noise , aircraft noise and rail 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 area.

Radioactive pollution:

Radioactive pollution The radioactive pollution is defined as the physical pollution of air, water and the other radioactive materials. The ability of certain materials to emit the proton, gamma rays and electrons by their nuclei is known as the radioactivity. The protons are known as the alpha particle and the electrons are also known as the beta particle. Those materials are known as the radioactive elements. The environmental radiations can be from different sources and can be natural or manmade. The natural radiations are also known as the background radiations.

Thermal pollution:

Thermal pollution Thermal pollution is the degradation of water quality by any process that changes ambient water temperature A common cause of thermal pollution is the use of water as a coolant by power plants and industrial manufacturers. When water used as a coolant is returned to the natural environment at a higher temperature, the change in temperature decrease oxygen supple affects ecosystem composition. Urban runoff – stormwater discharged to surface waters from roads and parking lots–can also be a source of elevated water temperatures.

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