Wednesday, December 2, 2015

What are Greenhouse Gases?

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Greenhouse gases are gases that trap the heat in the Earth's atmosphere. When heat is trapped in the earth's atmosphere the temperature of the surrounding air increases.

When the earth's atmosphere is continuously heated due to the effect of greenhouse gases, it results in the increase of temperature in the surrounding atmosphere. When this happens it leads to a phenomenon called global warming.

The release of greenhouse gases into the atmosphere is caused due to our day to day activities. For example, driving a car, using electricity, industrial activities, raising cattle, using fertilisers, etc. 

Greenhouse gases

Carbon dioxide is a greenhouse gas that is a primary cause of global warming because everyday emissions of carbon dioxide due to human activities is comparatively high.

Carbon dioxide is released into the earth’s atmosphere due to the burning of fossil fuels, solid wastes, trees, products made from wood and due to industrial chemical reactions.

Greenhouse gases other than carbon dioxide that cause global warming are water vapour, Methane, Nitrous Oxide, and fluorinated gases.

Methane is emitted during the production and transport of coal, natural gas and oil. Methane is also released from livestock, agricultural practices and the decay of organic material.

Nitrous Oxide Nitrous oxide is emitted during agricultural activities, industrial activities, and during the combustion of fossil fuels and solid wastes.

Fluorinated gases are released due to the many different industrial activities. Examples of fluorinated gases are hydrofluorocarbons, perfluorocarbons, sulphur hexafluoride, nitrogen trifluoride.


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