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Greenhouse gasses (GHGs)
Gasses that allow light and heat from the sun to enter the earth's atmosphere, but trap heat on earth, preventing it from being released back into space. These gasses are believed responsible for human-caused (anthropogenic) climate change. The main GHGs that have an effect on climate change include: carbon dioxide (CO2), nitrous oxide (N2O), methane gas (CH4), refrigerant gasses (HFCs).
"Greenhouse gas emissions have risen significantly in the last century and continue to remain high, despite many efforts to curb them."
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