Atmospheric CO2
Definition
Atmospheric CO2 refers to the concentration of carbon dioxide gas in Earth's atmosphere. It is a greenhouse gas that contributes to global warming and climate change.
Related terms
Greenhouse Effect: The process by which certain gases, including CO2, trap heat in Earth's atmosphere like a greenhouse.
Carbon Cycle: The natural cycle through which carbon is exchanged between living organisms, the atmosphere, oceans, and rocks.
Fossil Fuels: Non-renewable energy sources formed from ancient organic matter (such as coal, oil, and natural gas) that release CO2 when burned.
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