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 (CO) and other heat-trapping “greenhouse gases” into the atmosphere. Though natural amounts of CO have varied from 180 to 300 parts per million (pump), today’s CO levels are around 400 pump.
That’s 30% more than the highest natural levels over the past 800,000 years. We can tell that the additional CO in the atmosphere comes mainly from coal and oil because the chemical composition of the CO contains a unique fingerprint. -YMMV. EDP. Org/human-acuity-casuals-global-warming Although It Is natural for local temperatures to fluctuate, over the past fifty years the average global temperature has increased at the fastest rate In global history. ;Average temperatures have climbed 1. 4 degrees Fahrenheit (0. Agree Celsius) around the world since 1880, much of this in recent decades. The wide range use of chlorofluorocarbons in the late twentieth century directly contributed to the depleting ozone at that time. After this was realized by scientists and acknowledged by the EPIC, the use of chlorofluorocarbons was phased out. -www. NRC. Org/globalization/ecclesiastics. Asp The Earth’s atmosphere Is over-loaded with heat-trapping carbon dioxide, which threatens large-scale disruptions in climate with disastrous consequences.
Carbon dioxide and other air pollutants are collecting In the atmosphere Like a thickening blanket, trapping the sun’s heat and causing the planet to warm up. Coal- burning power plants, automobiles, and deforestation are the top contributors to this carbon dioxide emission. -http://www. NRC. Org/globalization/FL 01 . Asp Paragraph: Global warming is a serious issue that affects all of us in some way. While our generation may not witness first-hand the long term effects it will have on our planet, our descendents certainly will.
The devastating impacts of global warming include the melting of arctic Ice caps, disrupting those ecosystems and eventually causing sea levels to rise, therefore Increased flooding. More frequent and intense heat waves and heavier rainstorms and flooding are also a result of global warming. Another negative outcome of global warming Is Increased alarm pollution and spread of insect-borne diseases. All of these changes pose serious and costly risks to humanity warming emissions, these impacts will continue to intensify.