Global Carbon Cycle
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Cabon gases are exchanged in all surfaces of the Earth
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Greenhouse effect
Our atmosphere traps some of solar radiation as a greenhouse, which increases the planet's temperature
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The main greenhouse gases
in 2004, deforestation has caused 17.3% of CO2 emissions
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Consequences of the deforestation
Some consequences of deforestation :
- Global warming
-Higher temperatures
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Global warming projection
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www.ipcc.org
the global warming projection and the the temperature anomalies for the earth by the end of the century.
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Climate change: Arctic passes 400 parts per million milestone
Seth Borenstein
Arctic monitoring stations show carbon dioxide levels are now above 400 parts per million. Carbon dioxide is the chief climate-change gas and stays in the atmosphere for 100 years.
U.N. report warns environment is at tipping point
RIO DE JANEIRO (AP) – The earth's environmental systems "are being pushed towards their biophysical limits," beyond which loom sudden, irreversible and potentially catastrophic changes, the United Nations Environment Program warned Wednesday.
Development banks pledge $175bn for public transport at Rio+20
Jonathan Watts
Money will be invested in building transport systems that will reduce greenhouse gas emissions
Governments failing to avert catastrophic climate change, IEA warns
Fiona Harvey and Damian Carrington
Ministers attending clean energy summit in London to be gravely warned about continuing global addiction to fossil fuels
Experiments Underestimate Plant Responses to Climate Change
Experiments may dramatically underestimate how plants will respond to climate change in the future.