Earth is the only known life-supporting planet in the solar system. Air, water and soil are three vital natural resources. Nowadays, pollution of these elements has become a non-curable headache for us. As the part of development, urbanization and industrialization, many undesirable substances have been deposited in these natural resources. This has led to severe consequences in the form of global warming, greenhouse effect, climate change, etc. Here we will learn about the greenhouse effect and the greenhouse gases, how they lead to global warming and change in the climate.
Air pollution is the contamination of air by pollutants. Toxic gases, smoke and dust particles are some main air pollutants. Toxic gases may include sulphur dioxide (SO2), carbon monoxide (CO), oxides of nitrogen (NO, NO2, N2O), carbon dioxide (CO2), CFCs (chlorofluorocarbons), etc. These pollutants are generated either by natural phenomenon or by human activities. All natural and human activities have led to the elementary cause of air pollution i.e., the greenhouse effect. Greenhouse effect is the reason behind global warming and climate change.
Greenhouse effect & Greenhouse gases
A greenhouse is a place where plants are kept and its roof is covered either by glasses or by any other transparent object. In colder climates, in order to maintain a warm atmosphere for plants, they are kept in the closed glass houses. Through these glasses, sunlight will enter the house and later, the greenhouse won’t let the heat go out. Glass traps the heat. By this process, the temperature inside the greenhouse will be higher than the temperature outside.
The same phenomenon takes place in our atmosphere and it has the same effect like a greenhouse. When the UV (ultraviolet) radiations enter the earth, a part of them is absorbed by the earth and rest is reflected back to the atmosphere. Some gases like carbon dioxide, methane, nitrous oxide, water vapour, etc. trap the reflected UV radiations and don’t let the heat escape the atmosphere. This eventually elevates the temperature of the earth’s surface. This atmospheric effect is known as the greenhouse effect. The gases that are involved in the greenhouse effect are called the greenhouse gases.
Factories, automobiles, deforestation, etc. are few major contributors of the greenhouses gases. The increased number of factories and automobiles raised the amount of these gases in the atmosphere. These gases never let the radiations escape from the earth and enhance the surface temperature of the earth. This is called global warming.Hence, the greenhouse effect leads to global warming. This also leads to climate changes.
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