請以point form分析造成Global Warming的原因(English)

1. burning of fossil fuels
2. deforestation
3. land filling
4. pastoral farming
5. refrigerant in air conditioner and refrigerator
all these will increase the amount of greenhouse gases in the air, causing gobal warming

Carbon dioxide (50%):
1. burning fossil fuels in factories and vehicles,
2. forest burning

CFCs (=chlorofluorocarbons, 20%):
3. aerosols,
4. plastic foams,
5.refrigerators and
6. air conditioners

Methane (16%):
7. cattle and paddy fields