Introduction: Global warming is gradually becoming a serious concern to our environment and our planet as a whole. Nature is now showing signs with unique changes affecting our lives. When the surface temperature of the earth heats up human beings are not the only ones who feel the changes and also react in some way. Animals and sometimes even plants will also be affected by the global warming. What is global warming: An overall warming of the planet based on average temperature over the entire surface. It refers to the increasing average temperature of Earth's atmosphere and oceans since the late 19th century and its probable continuation. Warming of the climate system is unequivocal and scientists are more than 90% certain that most of it is caused by increasing concentrations of greenhouse gases produced by human activities such as deforestation and the burning of fossil fuels.
Causes of global warming: The causes are mainly from us the human race and the effects on us will be severe. * Greenhouse gases: The greenhouse effect is the procedure by which absorption and emission of infrared radiation by gases in the atmosphere warm a planet's lower atmosphere and surface. The major greenhouse gases are water vapor which causes about 36–70% of the greenhouse effect, carbon dioxide (CO2) which causes 9–26%, methane (CH4) which causes 4–9% and ozone (O3) which causes 3–7%. Human activity since the industrial revolution has increased the amount of greenhouse gases in the atmosphere leading to increased radioactive forcing from CO2, methane, troposphere ozone, CFCs and nitrous oxide. * Solar activity: Solar variations causing changes in solar radiation energy reaching the Earth have been the cause of past global warming. The effect of changes in solar forcing in recent decades is uncertain but small with some studies showing a slight cooling effect while others studies suggest a slight warming effect. An increase in solar activity should warm the stratosphere. * Methane: Methane production occurs in oil manufacturing, cattle raising, wet cultivation of rice with methane-producing conditions. Every year humans release 350 to 550 million tons of methane into the atmosphere. Methane like- carbon dioxide traps the sun's energy and causes global warming. * Fossil fuel : Everyday more electric gadgets flood the market and without widespread alternative energy sources we are highly dependent on burning coal for our personal and commercial electrical supply. * Burning gasoline for transportation: With our population growing at an alarming rate the demand for more cars and consumer goods means that we are increasing the use of fossil fuels for transportation and manufacturing. * Deforestation: The use of forests for fuel (both wood and for charcoal) is one cause of deforestation but in the first world our appetite for wood and paper products, our consumption of livestock grazed on former forest land and the use of tropical forest lands for commodities like palm oil plantations contributes to the mass deforestation of our world. Forests remove and store carbon dioxide from the atmosphere and this deforestation releases large amounts of carbon as well as reducing the amount of carbon capture on the planet. * Usage of chemical fertilizers on croplands: The use of chemical fertilizers has risen dramatically. The high rate of application of nitrogen rich fertilizers has effects on the heat storage of cropland and the run-off of excess fertilizers creates ‘dead-zones’ in our oceans. * Population: Another major man made cause of global warming is population. More people mean more food and more methods of transportation. That means more methane because there will be more burning of fossil fuels and more agriculture. * Industrial Revolution: New energy hungry inventions created in the industrial revolution helped spark much of today's global warming. * Hole in ozone layer: It was caused by greenhouse gases...
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