The green house effect, ozone depletion, and soil salinity and degradeation.

The "GREENHOUSE EFFECT" Greenhouse effect is a warming of the lower atmosphere and surface of the planet by a complex process involving sunlight, gases, and particles in the atmosphere. The amount of heat-trapping atmospheric gases, called greenhouse gases, have greatly increased since the mid-1800's, when modern industry became widespread. Since the late 1800's, the temperature of the earth's surface has also risen. The greenhouse effect is so named because the atmosphere acts much like …

…lower slopes and plains and is particularly common on riverine plains. The wetland salinity problem is increased by rises in groundwater flow due to dry land salinity higher in the catchment. BIBLYOGRAPHY http://www.crysalinks.com/greenhouseeffect.html http://www.bbc.co.uk/weather/features/alphabet19.shtml http://www.alpha-plus.fsnet.co.uk/green_house/ http://www.soton.ac.uk/~engenvir/environment/air/greenhouse.laws.html Encarta disc library 2003 Encarta disc library 2001 Encarta disc library 1999