summary of greenhouse gases

Question 1

four greenhouse gases

Answer 1

CO2, methane, nitrous oxides and CFCs

Question 2

human activity sourcing CO2

Answer 2

burning fossil fuels
slash and burn forest clearance

Question 3

human activity sourcing Methane

Answer 3

generated in anaerobic conditions by bacteria
cattle produce large volumes of methane from anaerobic activity of bacteria in their gut - largely in burps

Question 4

human activity sourcing Nitrous oxides

Answer 4

burning fossil fuels

Question 5

human activity sourcing CFCs

Answer 5

until 1990’s CFCs were used as a solvent for aerosols (deodorants)