The trapping of energy from the sun by greenhouse gases in the atmosphere leading to rise in Earth’s temperature is known as the green house effect.Greenhouse gases such as carbondioxide,methane, nitrous oxide and chloro fluoro carbon absorb and reflect infra red waves radiated by the earth causing increase in temperature.The effect is very similar to what happens inside a greenhouse.
Greenhouse
A greenhouse is a structure of glass or plastic in which temperature and humidity can be controlled for the cultivation or growth of plants.
Greenhouse gases
⭐ Carbondioxide:It is the most abundant green house gas released by burning of fossil fuels, deforestation, respiration of animals, decaying of organic matter.
⭐ Methane:It is produced by the incomplete decomposition of organic compounds by methanogenic bacteria under anaerobic condition.It is also produced by the enteric fermentation in the cow and from flooded rice fields.
⭐ Nitrous oxide:It is released by the burning of fossil fuels, industrial processes and agricultural practices like ploughing.
⭐ Chlorofluorocarbons:These are coolant gases used in refrigerators, aerosols and solvents.
Effect of global warming
⭐The level of sea rises due to the melting of glaciers and thermal expansion of water.It can submerge coastal areas of countries.
⭐Due to global warming the rise in temperature could create unexpected changes in weather conditions, making some regions hotter and other colder.
⭐The rainfall pattern could also change causing drought in some areas and flooding in others.
⭐ Crops and forests may be affected by insects pests and plant diseases resulting in severe damage.
⭐It can also result in the loss of biodiversity due to the extinction of coral reefs and other key species.
Control measures
Global warming can be controlled by reducing the use of fossil fuels,afforestation,carbon sequestration, shifting to renewable sources of energy such as solar power, wind power and hydel power.
Things you can do to reduce global warming
⭐Use less heat and air conditioning
⭐Car pool,use bicycles and walk when you can
⭐Buy energy efficient products
⭐Use CFL bulbs
⭐ Reduce,reuse and recycle resources
⭐Switch off equipment when they are not in use
⭐Plant trees
⭐ Encourage others to conserve energy
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