Cause And Effect Of Global Warming

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Day in and day out it is difficult to avoid reading, hearing and even witnessing on the issue of global warming. Global warming is a gradual increase in the overall temperature of the earth 's atmosphere generally attributed to the greenhouse effect caused by increased levels of carbon dioxide and other pollutants. The effects [of global warming] are being felt now with the currency of more extreme weather events and are predicted to intensify in coming decades. (Sadler-Smith 2014) Observations throughout the world make it clear that climate change is occurring, and particular scientific research seeks to demonstrate that the greenhouse gases released by human activities are the main cause to the issue.
One of the most direct evidence of global warming is in temperature analysis. Scientists are able to remove long core samples from ice sheets to reconstruct a climatic record. Just like in geology, the further down the scientist looks into earth the older the rock. Using this similar method the air trapped inside the ice can be tested to measure atmospheric gases. The rate in which temperature has increased over the last few decades is alarming compared to the rate over the last century. Global surface temperature has increased 0.6 degrees Celsius in the past thirty years, and 0.8 in the last century (Hansen 2006). The significant increase can be directly related to the amount of greenhouse gases in the atmosphere. For the last 650,000 years atmospheric CO2 has never been
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