Earth is the only life-supporting planet known in the solar system composed of three vital natural resources: air, water, and soil. Recently, pollution of these elements has become a non-curable problem. As the part of development, urbanization, and industrialization, many undesirable substances have been deposited in these natural resources leading to severe consequences in the form of global warming, greenhouse effect, climate change, etc.
Carbon dioxide (CO2), methane (CH4), ozone (O3), nitrogen oxide (N2O) and chloroflurocarbons (CFCs) are the greenhouse gases (mainly carbon dioxide and methane) that trap the heat (infrared radiation) reflected by the Earth.
A greenhouse is a place where plants requiring regulated climatic conditions are kept and its roof which is covered by glasses. They are kept in the closed glass houses in colder climatic conditions in order to maintain a warmer atmosphere for plants. Through these glasses, sunlight enters the house and later, the glasses of the greenhouse trap the heat. In this way, the temperature inside the greenhouse is higher than the temperature outside.
The atmosphere acts similar to the greenhouse glass walls. The air cover allows solar radiations to pass through it to the Earth’s surface, but prevents the long wave infrared radiation (which is reflected back from Earth) to escape into the space. An increase in the percentage of some gases such as carbon dioxide and methane in the atmosphere prevents the escape of heat from the earth. This results in an increase in the average temperature of earth. This is known as greenhouse effect.
Causes of greenhouse effect
The major contributors of the greenhouses gases are factories, automobiles, deforestation, etc. The increased number of factories and automobiles increases the amount of these gases in the atmosphere. The greenhouse gases never let the radiations to 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 which also leads to climate changes.
Effect of greenhouse gases
The main effect of increased greenhouse gases are:
Effects of global warming
The following are the effects of global warming:
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