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Greenhouse effect

This is about the topic of greenhouse efferct and cimate change.
by

Justin Mills

on 31 May 2010

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Transcript of Greenhouse effect

Greenhouse effect Defintion : Man-made: Burning fossil fuels that traps infared radiation from escaping the earth which warms the lower layers of the atmosphere and cools the upper layers. Natural: Keeps earth's climate warm and inhabitable. Climate Change definition:
A change in the statistical distribution of weather over periods of time that range from decades to millions of years. Evidence of Global Warming: Atmospheric carbon dioxide has increased about 60 ppm.
in the last 150 years. The sea surface temperature has risen in the last 35 years, causing a decrease in the extent of sea ice. Frequency of hurricanes has gradually risen in the last 170 years. How we can reduce climate change as individuals, nation, and world: You can ride a bike instead of driving a car, create a compost pile, insulate your home, plant a tree, get a Christmas tree you can use each year, and use recycled paper. What effect or impact might climate change have on earth's inhabitants? It could threaten mankind as a whole by bringing flooding over the land which could drown people, animals, and plants. Things that cause climate change: Greenhouse gases and their sources, continental drift, volcanoes, the earth's tilt, and ocean currents. Evidence of humans impacting climate change: Fossil fuels that we burn in factories and other things that burn fossil fuels form CO2 which put a hole through the ozone layers. This is causing the temperature to rise which is melting the polar ice caps and raising the sea level. Which eventually might cause the sea to flood our inhabitant lands. We are also cutting down lots of trees in rainforests which could eventually cut out the oxygen that we have to breath to live. http://www.schooltube.com/video/6d4616464eccd75e2866/Climate-Change-PSA
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