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Recommended: Global warming causes and effect

The cause of global warming is primarily the greenhouse effect. Like global warming its a natural phenomenon. As sunlight hits the earth some is reflected off into space but some is getting trapped/absorbed. The sunlight is getting absorbed by methane and carbon dioxide. The major greenhouse gases are carbon dioxide, methane, nitrous oxide, hydrofluorocarbons and perfluorocarbons. In our country the greenhouse gasses usually come from the burning of fossil fuels. Carbon dioxide; the main greenhouse gas,comes from the use of petroleum, coal and natural gas. Methane comes from landfills, coal mines, oil and natural gas operations and agriculture. Its from the use of nitrogen fertilizers, from burning fossil fuels and industrial and waste management processes. All the gases together come from electric production, transportation, industry, agriculture and land use and forestry.

At least 5 major ice ages have occurred throughout earth's history. The earliest was over 2 billion years ago the most recent was 3 million years ago. The medieval warming period was when it was very warm in europe. The warmest part of it was in 950 to 1100 A.D. The medieval warm period occurred before the little ice age in europe. The little ice age was a very cool time in europe and other places around the world. Earths temperature can change by the changes in the greenhouse effect, variations in the suns energy, and issues with the reflectivity in earths surface. The carbon dioxide levels have risen in the past years, by burning fossil fuels. Methane levels have been the same by factories and us burning fossil fuels.
The consequence of losing the coral reef would be all biodiversity would be gone. The reefs are home to many different species. They are ...

... middle of paper ...

...erything that i've seen and learned in this class shows that humans have most of the responsibility with causing greenhouse gases by our uncaring decisions towards the earth.

Works Cited

www.windows2universe.org/earth/climate/medieval_warm_period.html

http://www.learner.org/courses/envsci/unit/text.php?unit=2&secNum=4

http://www.epa.gov/climatechange/science/causes.html

http://news.nationalgeographic.com/news/2006/05/warming-coral.html

http://wwf.panda.org/about_our_earth/aboutcc/problems/impacts/coral_reefs/

http://www.nrdc.org/globalwarming/fcons/fcons1.asp

http://centerforoceansolutions.org/climate/impacts/ocean-warming/ http://centerforoceansolutions.org/climate/impacts/ocean-acidification/ http://science.opposingviews.com/human-impact-earths-atmosphere-3677.html
https://www2.ucar.edu/climate/faq/how-much-has-global-temperature-risen-last-100-years

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