pollution

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.

There are 6 (six) types of pollution that are going to be discussed in this site, namely air, water, noise, land, radioactive, and thermal. Please proceed to the following links to learn anyone of them.
• Air Pollution
Air pollution is indication of disturbances to the composition of compounds in the atmosphere
• Water Pollution
Water pollution is contamination of water by foreign matter that deteriorates the quality of the water. Water pollution covers pollutions in liquid forms like ocean pollution and river pollution
• Land Pollution
Land degradation is a process in which the value of the biophysical environment is affected by combination of human-induced processes acting upon the land.[1] also environmental degradation is the gradual destruction or reduction of the quality and quantity of human activities animals activities or natural means example water causes soil erosion, wind, etc.
• Noise Pollution
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, aircrafts, and trains.[1][2] 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.
• Radioactive Pollution
Radioactive wastes are wastes that contain radioactive material. Radioactive wastes are usually by-products of nuclear power generation and other applications of nuclear fission or nuclear technology, such as research and medicine. Radioactive waste is hazardous to most forms of life and the environment, and is regulated by government agencies in order to protect human health and the environment.
• 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 decreases oxygen supply, and affects ecosystem composition.Urban runoff–stormwater discharged to surface waters from roads and parking lots–can also be a source of elevated water temperatures.
Q2
Air pollution is indication of disturbances to the composition of compounds in the atmosphere, as it may be summarized as shown:
• excess emission of gases/vapors into atmosphere
• saturation of chemical compounds/particulates
• rate of dissipation < (smaller than) rate of absorption through various cycles (i.e. carbon and nitrogen cycle)
• emergence of new chemical reactions of reactive and non-biodegradable compounds.
Global warming, acid rain, smog, ozone depletion are some effects of air pollution.In relation to this, we may observe the cycle which involves in our daily lives: carbon and nitrogen cycle.These 2 cycles are the most important of all, regulating the composition of carbon and nitrogen of Earth. Imagine the reverse is to happen....

Sources and Methods
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We can classify major sources that lead to air pollution to the following categories:
• motor vehicle exhaust
• heat and power generation facilities
• industrial processes
• auto manufacturing
• fertilizers plants
• building demolition
• solid waste disposal
• solvent evaporation
• volcanic eruption
• fuel production
• roadway construction
• electrical components manufacturing
• extraction of metals
• forest fires
• agriculture
Air pollution prevention, monitoring and solution.

Solution efforts on pollution is always a big problem. This is why prevention interventions are always a better way of controlling air pollution. These prevention methods can either come from government (laws) or by individual actions. In many big cities, monitoring equipment have been installed at many points in the city. Authorities read them regularly to check the quality of air. Let's see more below:
Government (or community) level prevention Governments throughout the world have already taken action against air pollution by introducing green energy. Some governments are investing in wind energy and solar energy, as well as other renewable energy, to minimize burning of fossil fuels, which cause heavy air pollution.

Governments are also forcing companies to be more responsible with their manufacturing activities, so that even though they still cause pollution, they are a lot controlled.

Companies are also building more energy efficient cars, which pollute less than before.
Individual Level Prevention Encourage your family to use the bus, train or bike when commuting. If we all do this, there will be less cars on road and less fumes.

Use energy (light, water, boiler, kettle and fire woods) wisely. This is because lots of fossil fuels are burned to generate electricity, and so if we can cut down the use, we will also cut down the amount of pollution we create.

Recycle and re-use things. This will minimize the dependence of producing new things. Remember manufacturing industries create a lot of pollution, so if we can re-use things like shopping plastic bags, clothing, paper and bottles, it an help.

Q3
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Water pollution is contamination of water by foreign matter that deteriorates the quality of the water. Water pollution covers pollutions in liquid forms like ocean pollution and river pollution. As the term applies, liquid pollution occurs in the oceans, lakes, streams, rivers, underground water and bays, in short liquid-containing areas. It involves the release of toxic substances, pathogenic germs, substances that require much

Sources and Methods
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We can classify major sources that lead to water pollution to the following categories:
• petroleum products
• synthetic agricultural chemicals
• heavy metals
• hazardous wastes
• excess organic matter
• sediment
• infectious organisms
• air pollution
• thermal pollution
• soil pollution
Prevention of water pollution.
Dealing with water pollution is something that everyone (including governments and local councils) needs to get involved with. Here are a few things you can do to help. Learning about the issue (like you are doing) is the greatest and most important step to take. Here are a few more:
You can help Never throw rubbish away anyhow. Always look for the correct waste bin. If there is none around, please take it home and put it in your trash can. This includes places like the beach, riverside and water bodies.Learn more about waste disposal here. Use water wisely. Do not keep the tap running when not in use. Also, you can reduce the amount of water you use in washing and bathing. If we all do this, we can significantly prevent water shortages and reduces the amount of dirty water that needs treatment. Do not throw chemicals, oils, paints and medicines down the sink drain, or the toilet. In many cities, your local environment office can help with the disposal of medicines and chemicals. Check with your local authorities if there is a chemical disposal plan for local residents. Buy more environmentally safe cleaning liquids for the use at home and other public places. They are less dangerous to the environment. If you use chemicals and pesticides for your gardens and farms, be mindful not to overuse pesticides and fertilizers. This will reduce runoffs of the material into nearby water sources. Start looking at options ofcomposting and using organic manure instead.

If you live close to a water body, try to plants lots of trees and flowers around your home, so that when it rains, chemicals from your home does not easily drain into the water.
Governments, local councils and laws
Many governments have very strict laws that help minimize water pollution. These laws are usually directed to industries, hospitals, schools and market areas on how to dispose, treat and manage sewage. Do you know the laws in your country? This is the time to find out.

In many developed cities, waste or sewage treatment is very efficient, and designed to minimise pollution of water bodies. Click on the button below to see an example of how a good sewage (wastewater) treatment works.