Global warming is an extremely severe problem facing the world today. Its effects and causes have been on the rise and people need to do something about it before the problem gets any worse. Global warming is an increase in the earth's temperature, which can be caused by the use of fossil fuels, and industrial or agricultural processes. Man-made emissions are adding to the amount of carbon dioxide already being naturally released. These harmful processes have been leading to a large increase in the buildup of "greenhouse gases," which are carbon dioxide, methane, nitrous oxide, chlorofluorocarbons, and water vapor. Up until the industrial revolution the world did not have ...view middle of the document...
We do know there is likely to be an overall trend toward increased precipitation and evaporation, and more intense weather systems, in the form of violent rainstorms, blizzards and sun-baked, drier soils.
The Facts—What Do We Already Know About Changing Global Conditions (Global Warming)?
* Global temperatures are rising. Observations collected over the last century suggest that the average land surface temperature has risen 0.45-0.6°C (0.8-1.0°F) in the last century.
* Precipitation has increased by about 1 percent over the world's continents in the last century, with more rain in high latitudes and less rain in many tropical areas.
* Sea levels have risen approximately 15-20 cm (6-8 inches) worldwide in the last century, due to melting mountain glaciers and ocean expansion from warmer ocean temperatures.
The Future—What Predictions Can We Make About Climate Change and Global Warming?
* Rising global temperatures are expected to further raise sea level, and change precipitation and other local climate conditions.
* Changing regional climate could alter forests, crop yields, and water supplies.
* In the next century, the projected 2°C (3.6°F) warming could shift the ideal range of many North American forest tree species by about 300 km (200 mi.) to the north.
* Climate change could change...