Concentrations of greenhouse gases (GHGs) in the atmosphere are increasing, causing global warming. As average temperatures continue to rise, science predicts we are fast approaching a “tipping point” that will trigger irreversible climate change.
GHG includes water vapour (H2O), carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), ozone (O3), chlorofluorocarbons (CFCs) and hydrofluorocarbons (HFCs).
The definition of a carbon footprint is the combined set of greenhouse gas (GHG) emissions, often expressed as carbon dioxide equivalent (CO2e).
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