What are greenhouse gases; how are they produced?

Some greenhouse gases, like methane, are produced through agricultural practices, including livestock manure. Others, like CO2, largely result from natural processes like respiration and from the burning of fossil fuels like coal, oil and gas.

Explanation:

Explanation:

Extra greenhouse gases are produced through activities which release carbon dioxide, methane, nitrous oxide and ozone CFCs (chlorofluorocarbons). These activities include: Burning coal and petrol, known as 'fossil fuels'.

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