Air pollution is one of the virtual problem nowadays. There are many reasons of it but mostly it is caused by cars, growing cities, development of economy and industrialization.
Clean air consist of several gases. When some other gases or dangerous elements get into the clean air, pollution is inevitable. Ozone layer is affected too much by pollution and it will cause serious disturbances on the environment.
People are the main cause of pollution because the things that we use contain dangerous chemicals and they make atmosphere dirtier. Furthermore climate changes because of pollution.
Many substances involved in the things that people use, pollute the air seriously. For instance, cigarettes contain carbon monoxide. It occurs when wood or petrol are not burned. Another one is carbon dioxide and it emerges when we burn coal or wood. When these gases contact with atmosphere, ozone layer is destroyed.
The other one is lead and simply paint or batteries that we use in daily life contain lead but we should be careful since it may cause serious problems if it gets into our bodies.
Generally these gases come from factories but also there are dangerous materials in our houses. In order to keep ourselves from the possible effects of pollution we have to take precautions towards air pollution.
We can control ourselves and we should act carefully. So, for example, we should use public transportation, avoid spray cans. Besides, people mostly be careful regarding trees as they are sources of oxygen. Due to its importance we should keep them clean.
Environment and also air are so significant for all living beings. So people should take into account this issue and they should do whatever they can to keep our environment clean.
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Pollution is when something is added to the environment harmful or poisonous to all living things. Smoke or dust in the air is a type of pollution . Sewage in drinking water is another type of pollution, containing germs and viruses. There are 3 kinds of pollution: water pollution, land pollution, and air pollution.
As pollution grows, ways to combat it have grown too. Solar energy and wind energy give people other ways to power their homes. When people use these alternative forms of energy, they put less carbon dioxide into the environment. 
Air pollution[change | change source]
Air can be polluted by many things. Air pollution includes poisonous gases, sulphur dioxide, nitrogen dioxide, carbon monoxide and very small particulates. Smoke and harmful gases released by fires, industries and thermal power plants cause air pollution. Using coal and wood as fuels for fire cause a lot of air pollution. Petroleum produces less pollution per tonne, but it causes a lot of pollution since a lot of it is burned globally. Air pollution may cause breathing problems such as asthma or other health problems. It also causes diseases like cancer.
Air pollution causes global warming and acid rain, which can lead to unpredictable levels of drought worldwide. This makes it difficult for the living organisms to survive.
Water pollution[change | change source]
Water pollution is the presence of harmful materials in water, such as sewage, dissolved metal, waste from farms, factories and crude oil spilled from oil tankers. The three main substances that pollute water are nitrates from fertilizers, sewage and detergents.
Activities such as bathing and washing clothes near lakes, ponds or rivers add nutrients like nitrate and phosphate into the water bodies.This leads to excessive growth of algae on the surface of water. It blocks the penetration of sunlight and air, thus reducing oxygen.
It causes harm to organisms living in water and can also harm people's health. In extreme cases, it may cause diseases like cancer.
Noise pollution[change | change source]
Noise pollution (also known as sound pollution) is harmful to the brain and hearing of all animals and humans. This includes the sound of vehicles, loud speakers, airplanes, jets, train horns etc. Noise pollution can cause ear problems or even permanent deafness, especially to older people. It also causes brain related problems.
Land pollution or Soil pollution[change | change source]
Soil pollution (also known as land pollution) is caused when man-made chemicals, such as hydrocarbons, heavy metals, and solvents, get into the soil.These chemicals come from industrial activities and from improper waste in disposal in leaky landfills. Soil pollution can cause health risks. The chemicals can produce harmful vapors, or they can contaminate water supplies underneath the polluted soil.
Plastic pollution is the accumulation of plastic products in the environment that adversely affects wildlife, wildlife habitat, or humans. It is caused because plastic takes thousands of years to decompose or mix in the earth.
Thermal pollution[change | change source]
Thermal pollution is the harmful release of heated liquid into a body of water or heat released into the air as a waste product of a business.
A common cause of thermal pollution is the use of water as a coolant by power stations and industrial manufacturers. This puts back warm water, and so raises the temperature and decreases the oxygen content of the water.