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The greenhouse effect refers to circumstances where the short wavelengths of visibleLight from the sun pass through a transparent medium ( i.e. envelope of gases CO, CO2, SO2, etc . )and are absorbed , but the longer wavelength of the infrared re - radiation from the heated objects are unable to pass through that medium and are trapped causing more heating and a higher resultant temperature. Greenhouse gas levels have been increasing since the start of the Industrial Revolution. The most contributing greenhouse gases are carbon dioxide, nitrous oxide and methane. But without some greenhouse gases and the greenhouse effect, earth's temperature would be close to -18°C.
The population of the world is increasing day by day. The population of the world in increasing at the rate of three children per second. The pollution of the world is also increasing. The amount of smoke, dust and greenhouse gases like CO2, N2O, CH4, H2O vapour etc are increasing in the atmosphere as they are produced by industries and vehicles. These gases allow the solar radiation of the short wavelength to escape out from the earth but prevent the solar radiation of the longer wavelength to escape out from the earth. Asa result, this radiation, and various gases are stored in the atmosphere of earth and increase the temperature of the earth.Industries which are involved in cement production,fertilisers, coal mining, etc produce harmful greenhouse gas.Nitrous oxide is one of the greenhouse gas that is used in fertiliser and contributes to the greenhouse effect.
Effects of Green House
The effects of greenhouse on environment are as follows,
An artificial greenhouse is a man-made greenhouse. It is a house made of glass or plastic on a metallic frame. It is mainly used to grow offseason plants. In the artificial greenhouse, the glass and plastic allow the only short wave to pass but do not allow longer waves to pass. Here, the glass changes short wave into infrared radiation. The infrared radiation so formed do not escape out through the greenhouse and the temperature inside it increases. In the artificial greenhouse, the artificial temperature is provided to grow the plants. Here, the favourable condition necessary for the growth of plants is provided like climate, light, soil, moisture and other essential conditions. The roof of the artificial greenhouse is made slanted so that maximum solar energy enter through it.
Importance of artificial greenhouse
Control measures for greenhouse effect
The effects of greenhouse gases are as follows,
Some control measures for greenhouse effect are as follows,