Sample Qs-Greenhouse effect

a) Diagram 9 shows sources of greenhouse gases from human activities and natural processes Explain the sources of greenhouse gases. [10marks]

Suggested Answer:

-Sources of greenhouse gases;
F1- Emission from exhaust of motor vehicles (1m)
E1- release a lot of carbon dioxide gas and into atmosphere (1m)

F2- Combustion of fossil fuel in factories (1m)
E2- releases a large amount of carbon dioxide gas into atmosphere (1m)
E3- and also releases oxides of nitrogen (1m)

F3- Uses of aerosol spray/air conditioner (1m)
E4- with contains CFC (1m)
E5- CFC cause ozone depletion with bring about greenhouse effect (1m)

F4- Fermentation in ruminant animals / anaerobic fermentation in paddy field (1m)
E6- release methane gas into atmosphere (1m)

F5- use of inorganic fertilizer (1m)
E7- cause release of nitrogen oxide gas (1m)