Global warming refers to the rising average temperature of Earth’s atmosphere and oceans‚ which started to increase in the late 19th century and is projected to keep going up. Since the early 20th century‚ Earth’s average surface temperature has increased by about 0.8 °C (1.4 °F)‚ with about two thirds of the increase occurring since 1980.[2] 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
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Global warming Global warming the biggest threat in 21st century Introduction The term global warming has been common in the fields of whether and climate. The term does not posses the literal meaning as such but simply implies change in climate. The change in climate is attributed to overall rise in average temperatures of the universe. This poses a great threat to mankind (Korgen‚ 2007). The dangers attributed to global warming include health issues‚ scarcity of some vital natural resources
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Jacqueline Sanchez Brad Stiles Research Paper Global warming is no longer a myth and as consumers of resources‚ the world has to change and conserve their energy usage. There are many things one can do‚ but informing others how to take these dire steps our world needs in order to survive and support humankind. With CO2 making up over 70 percent of our atmosphere‚ we need to focus not only on how to slow down its growth‚ but removal of it s existence from the atmosphere to the right level of
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Thesis: Global warming is a human induced phenomenon causing a dramatic rise in average global temperatures and posing a major threat to our planet and it’s ecosystems. Points of Evidence: The science is clear: Human activity is causing our climate to change. -When we extract and burn fossil fuels such as coal or petroleum‚ we cause the release of carbon dioxide (CO2) and other heat-trapping “greenhouse gasses” into the atmosphere. Though natural amounts of CO2 have varied from 180 to 300
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This phenomena has been given the title global warming‚ and has sparked a new debate in local‚ state‚ national‚ and world policy. Since the end of WWII the United States has played the role of international policeman. As one of the strongest economic‚ political‚ and economic powers in the world the United Nations Special committee on Global warming research has also made us the leading emissions releaser in the world‚ with approximately one fifth of all global emissions coming from our country. There
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Abstract This report studies secondary research to discover the effects of global warming and the consequences it has on sea levels‚ ice melting and the polar bear. Websites researched were NASA‚ ICUN‚ National Geographic‚ BBC News‚ The Independent‚ IPCC‚ Arctic Council‚ National Resources Defense Council‚ UN News and D.V.D. called ‘An Inconvenient‚’ truth. Evidence researched supports the conclusion that scientists believe global temperatures have been rising and that human activity is a significant
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CAUSES OF GLOBAL WARMING: Global warming also causes sea surface temperatures to rise‚ precipitation patterns to change‚ etc.. (NASA‚ 2002) Global warming can have many different causes‚ but it is most commonly associated with human interference‚ specifically the release of excessive amounts of greenhouse gases. (EPA‚ 2006) Global warming is caused by excessive quantities of greenhouse gases emitted into Earth’s near-surface atmosphere. Greenhouse gases are both man-made and occur naturally
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Global Warming The greenhouse effect‚ in environmental science‚ is a popular term for the effect that certain variable constituents of the Earth ’s lower atmosphere have on surface temperatures. It has been known since 1896 that Earth has been warmed by a blanket of gasses (This is called the "greenhouse effect."). The gases--water vapor (H2O)‚ carbon dioxide (CO2)‚ and methane (CH4)--keep ground temperatures at a global average of about 15 degrees C (60 degrees F). Without them the average
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Abstract What is global warming? Global warming is the heating of the earth. Global warming happens when greenhouse gases such as carbon dioxide‚ water vapor‚ nitrous oxide‚ and methane trap heat and light from the sun in the atmosphere. This is known as the greenhouse effect. It prevents heat and light from escaping the earth’s atmosphere kind of like the earth is a giant greenhouse. Global warming is a good thing‚ but at the same time‚ can have devastating effects if not properly monitored and
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time to rise again to secure our future‚” said former Vice-President Al Gore. Al Gore made a speech about global warming and said how to keep it healthy. The earth can be kept healthy and exist longer without global warming. Global warming is becoming a popular topic around the world. “Global Warming and the Greenhouse Effect” discusses what global warming is. This is how global warming is caused. Energy travels from the sun to the earth to heat it. The earth then radiates energy back into
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