Environment:Future Climate
The greenhouse effect is a natural phenomenon. The atmosphere traps the sun's heat, keeping the planet warm, but the process is in delicate balance. If the components of the atmosphere change, the balance is disturbed, and too much heat is trapped. This leads to excessive global warming, the most important environmental issue of the century.
- Added:2006
- Country:America
- Duration:28
- Time of update:2011/3/11 15:03:55