| A | B |
|---|
| During the past 100 years global | temp. near the surface rose 0.74 deg. C. |
| Temp. fluctuations were also caused | by solar variations and volcanic eruptions |
| Sea level rise is expected to continue for | more than a millenium |
| Equilibrium is delayed due to | heat capacity of the oceans |
| GW will change agricultural | yields, glacial retreat |
| Species extinctions will increase and | so will the range of disease vectors |
| Concentration of CO2 has | increased by 31% since 1750 |
| Deforestation has also contriubted | to global warming |
| Water vapour is also a | greenhouse gas |
| Kyoto Protocol hasn't been | ratified by U.S. Kazkhstan and Australia |
| During the past 200 years | CO2 levels have risen 30% |
| Sea-level rise will cause | coastal flooding |
| Arctic and Antarctic warming | will cause the most drastic changes |
| Expanded use of biofuels could | cut global warming pollution |
| Restoring forests would expand | the carbon sink |
| GW will cause more extensive | and prolonged droughts |
| Burning fossil fuels accounts | for 75% of the C02 increase |
| Carbon dioxide remains in the | atmosphere for about 100 years |
| Average mpg increase from 24 t0 40 | would have the same effect as taking 44 million cars off the road in the US. |
| Since 1750 methane concentrations | have increased 149% |
