You cannot tease and then not share you findings from your studies!
Is it our combustions engines or cutting down of trees?
Combination of both?
Global Warming is defined as the warming of average global temperature by several degrees per century, considered by numerous scientists to be due to atmospheric pollution and coupled with greenhouse effects, and distorted land use of patterns. A mounting apprehension among scientists, global warming (IPCC,1991;Oskamp 2000;Taylor 1999).The Earth temperature fluctuates frequently over millions of years. Several of the fluctuations correspond with ice ages, the most recent one being 11,000 to 12,000 years ago.
Dissimilar from these natural fluctuations, the temperatures we experience change with daylight and night fall with the annual seasons. Ordinarily, a great deal of the suns heat striking the earth reflects back into space. Some of the Earths energy is also absorbed at the Earths surface through photosynthesis, a process where green plants grow and flourish. A balanced ecological system is when the carbon found in living organisms is constantly recycled, as one living organism becomes food and fertilizer of others. A problem happens when the carbon recycling process becomes disrupted through at least two human-caused interventions. The first problem is removal of biomass as humans cut down forests (where much carbon is stored) to create farmland and pasture (which store less carbon). Afterward we change farmland into parking lots and office buildings (which store very little carbon), and along the way savanna into desert and otherwise inhibit the normal conversion of carbon into plant material (e.g., Kaiser, 1999a).
The second problem occurs when humans burn fossil fuels in enormous quantities, as we have been doing ever since the Industrial Revolution with the burning of coal and natural gas. Such burning releases incredible amounts of carbon dioxide and other greenhouse gases into the atmosphere. If these gases are not recycled into biomass through photosynthesis by the vegetation that would normally cover land surface, the gases build up whereby creating a greenhouse effect. Increased carbon dioxide in the atmosphere acts like the glass in a greenhouse, trapping more of the suns heat and warming the earths surface unusually. Over the past 100 years, we have warmed another 2%, with projected estimates from the increasing greenhouse effect believes the earths surface may warm another 2%-7% by the year 2100, a remarkable warming in a brief period.
Many factors are related to global warming. Aerosols and other air pollutants from industrial processes moderate the warming process by increasing cloud brightness and reflecting more light back into space (Kerr, 1995;Kiehl 1999;Schwatz & Andreae, 1996). Aerosols in the form of chlorofluorocarbons (CFCs) contribute to the ozone hole (e.g. Kerr, 1992a). Atmospheric ozone absorbs harmful ultraviolet sunlight. It is rapidly depleting over Antarctica and Arctic in a pattern named ozone hole. The greenhouse effect warms our Earth but cools the stratospheric ice clouds, causing skin cancer according to scientist.
Another factor thats negative from global warming is the deep ocean currents transfer of heat across the sea well as flush the waters of harmful levels of salinity,(Kerr,1998,1999b).Concern is this along with currents contribute to global warming making the ocean inhabitable for algae and other aquatic life. The ocean provides food for humans and other organisms, also absorbs much of the carbon in greenhouse gases.
The Gaia hypothesis says the Earth self-regulates the whole thermal process (e.g.,Lovelock, 1988,1998).The heating and cooling fluctuate naturally as vegetation ,animal life, oceans, and atmosphere release heat and emissions and compensate for normal fluctuations, but humans could cause things to get out of hand.
