causes of climate change

Topics: Earth, Climate change, Sun Pages: 4 (745 words) Published: September 17, 2014
Mary Mitchell
June 25, 2014
Env 101
EC Climate Change Paper
What I Think Is Causing Climate Change
Upon completing the summer course of environmental science, I have learned plenty of information about the environment around us. I learned that there are many factors that can cause climate change in the world. I now know that climate change isn’t just caused by people in the world, or just the world changing slowly. I believe that the change is a combination of both humans and the environment together. I learned that there are multiple changes in the environment that are making the climate change. For example, the burning of fossil fuels and the conversion of land for forestry and agriculture are contributing to changes in the climate. Earth’s climate also can be affected by natural factors that are external to the climate system, such as changes in volcanic activity, solar output, and the Earth's orbit around the Sun. Changes in solar irradiance have contributed to climate trends over the past century but since the Industrial Revolution, the effect of additions of greenhouse gases to the atmosphere have been about ten times that of changes in the Sun’s output, meaning that the sun is causing slight climate change, but not a significant amount of change. The Earth has a natural greenhouse effect where certain gases (known as greenhouse gases) in the atmosphere allow the sunlight to enter but absorb the heat radiation. Because these gases absorb the heat, they keep the average surface temperature on Earth around 14°C. Without the natural greenhouse effect, the Earth’s average surface temperature would be around -19°C (US EPA). Without the greenhouse gasses being absorbed by Earth, the temperature of our planet would rise, creating change in our atmosphere. It would change the living conditions of humans, animals, and plants, which would then have an impact on Earth itself. Human activity contributes to climate change as well. Use of the amount of aerosols...

Cited: "Causes of Climate Change." Government of Canada, Environment Canada.N.p., 10 Dec. 2013. Web. 22 June 2014. .
"Causes of Climate Change." EPA. Environmental Protection Agency, 18 Mar. 2014. Web. 22 June 2014. .
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