Contemporary Issues Environmental threats Overpopulation Every 20 minutes‚ the world adds another 3‚500 human lives but loses one or more entire species of animal or plant life - at least 27‚000 species per year. ZGP July 1999 World population growth peaked at about two percent per year in the early 1960s. Latest population figures indicate that the rate of growth has slowed to 1.33 percent annually‚ equivalent to 78 million people a year. UNFPA 1999 The highest world population growth
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gGlobal Warming Jump to: navigation‚ search Global mean surface temperature anomaly 1850 to 2006 relative to 1961–1990 | Mean surface temperature anomalies during the period 1995 to 2004 with respect to the average temperatures from 1940 to 1980 | Global warming refers to the increase in the average temperature of the Earth’s near-surface air and oceans in recent decades and its projected continuation. The global average air temperature near the Earth’s surface rose 0.74 ± 0.18 °C (1.33
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Global warming is the increase in the average temperature of the Earth’s near-surface air and oceans in recent decades and its projected continuation. Global average air temperature near the Earth’s surface rose 0.74 ± 0.18 °C (1.3 ± 0.32 °F) during the past century. The Intergovernmental Panel on Climate Change (IPCC) concludes‚ "most of the observed increase in globally averaged temperatures since the mid-20th century is very likely due to the observed increase in anthropogenic greenhouse gas
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What is global warming‚ and how is it affecting the Earth and its inhabitants? Global Warming is sometimes referred to as the greenhouse effect. The greenhouse effect is the absorption of energy radiated from the Earth ’s surface by carbon dioxide and other gases in the atmosphere‚ causing the atmosphere to become warmer. The greenhouse effect is what is causing the temperature on the Earth to rise‚ and creating many problems that will begin to occur in the coming decades. For the last 10‚000 years
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GLOBAL WARMING-CAUSES AND EFFECTS Global warming is the term used to describe a gradual increase in the average temperature of the Earth’s atmosphere and its oceans‚ a change that is believed to be permanently changing the Earth’s climate. Even though it is an ongoing debate‚ it is proved by the scientists that the planet is warming. . Global warming Causes The causes are many of which the main culprit is the increase in the greenhouse gases that is produced by burning fossil fuel and deforestation
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GLOBAL WARMING Global warming is the ‘talk of the town’ in this century‚ with its detrimental effects already being brought to limelight by the recurring events of massive floods‚ annihilating droughts and ravaging cyclones throughout the globe. The average global temperatures are higher than they have ever been during the past millennium‚ and the levels of CO2 in the atmosphere have crossed all previous records. A scrutiny of the past records of 100 years indicates that India figures in the first
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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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eThe phrase global warming refers to the documented historical warming of the Earth’s surface based upon worldwide temperature records that have been maintained by humans since the 1880s.It is the increase in the average temperature of the Earth’s near-surface air and oceans.In the last 100 years‚ this temperature increased by about 0.8 °C (1.4 °F) with about two thirds of the increase occurring over just the last three decades.According to the exponentss of the concept‚the likely effects of a further
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Global warming From Wikipedia‚ the free encyclopedia Jump to: navigation‚ search For scientific and political disputes‚ see Global warming controversy‚ Scientific opinion on climate change and Public opinion on climate change. For past climate change see Paleoclimatology and Geologic temperature record. For the Sonny Rollins album see Global Warming (album). Line plot of global mean land-ocean temperature change from 1880-2010‚ relative to the 1951-1980 mean. The black line is the annual
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Global Warming by James Inmon Global Warming is the effect on climate change brought about by human impact on the environment. Just one degree increase in the average global temperature could have a big impact on our world. Three of the more common sources of Global Warming are; the burning of fossil fuels‚ industrial pollution‚ and urban sprawl. Fossil Fuels are carbon based compounds like coal and gasoline. When these fuel sources are burned‚ they release carbon dioxide and other air pollution
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