Globalwarming andrew

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<ul><li> 1. By Andrew</li></ul> <p> 2. What Is Global Warming? Global warming is the warming of the earth through carbon dioxide (CO2) being pumped into the atmosphere from tailpipes and smokestacks. Then the gases trap heat like the glass in a greenhouse. This is where the term the greenhouse effect came from. 3. Whats HappeningScientists say that the barrierinsulating the continental icecaps is melting. The impacts of warmingtemperatures in Antarcticaare likely to occur first in thenorthern sections of thecontinent, where summertemperatures approach themelting point of water, 32degrees F (0 degrees C). 4. Whats HappeningAs the ice melts, big chunksof glaciers will break off andbecome like ice cubes in a bigglass of water. The icechunks, known as icebergs,create mass in the ocean. Theicebergs displace the watercausing the ocean level torise. Some of the shoreline inmany places like Florida(where the land is at a lowaltitude) will go under water. 5. What Will Happen Rising global temperatures are expected to raise sea level, and change precipitation and other local climate conditions. Changing regional climate could alter forests, crop yields, and water supplies. It could also affect human health, animals, and many types of ecosystems. Deserts may expand into existing rangelands, and features of some of our national parks may altered. http:// be permanently globalwarming.nsf /content/impacts.html 6. Where Has It Been HappeningThis is where temperatures have risen in the world. 7. The yellow represents warming, melting glaciers, flooding and rising of sea level.The red represents the spread of disease, earlier springs, plant and animal shifts and populationchanges, coral reef bleaching, downpours, heavy snowfalls, and flooding, droughts and fires. 8. How Long Has It Been GoingOnThe reason the temperature has risenso much in the past 150 years isbecause of how much more we haveused fossil fuels, which gives offcarbon dioxide. According toNOAA, the global warmingrate in the last 25 years hasrisen to 3.6 degrees F percentury, which tends toconfirm the predictions oftemperature increases madeby international panels ofclimate scientists (IPCC).http://www.worldviewofglobalwa 9. How Long Has It Been Going On The earth has had highsand lows, droughts andfloods, but nothing hasbeen like the past 150years. 10. Whats Happening to the Animals Penguin populationdecline. Adelie penguinpopulations have shrunkby 33 percent during thepast 25 years in responseto declines in their wintersea ice habitat.Reference: Fraser, W.1998. Antarctic biologyand medicine program,University of Montana,personal communication. 11. Whats Happening to theAnimalsCoral reef bleaching, the whitening of diverseinvertebrate taxa, results from the loss ofsymbiotic zooxantheallae and/or a reduction inphotosynthetic pigment concentrations inzooxanthellae residing within scleractiniancorals. Coral reef bleaching is caused byvarious anthropogenic and natural variations inthe reef environment including seatemperature, solar irradiance, sedimentation,xenobiotics, subaerial exposure, inorganicnutrients, freshwater dilution, and epizootics.Coral bleaching events have been increasing inboth frequency and extent worldwide in thepast 20 years. Global climate change may playa role in the increase in coral bleaching events,and could cause the destruction of major reeftracts and the extinction of many coralspecies. 12. Whats Happening to theAnimalsRegions where major coral reef bleaching events have takenplace during the past 15 yearsYellow spots indicate major bleaching events. 13. ConclusionGlobal warming is affecting plants, animals, humans and theearth. We need to learn how to conserve our use of fossilfuels to minimize carbon dioxide production. This will slowdown the effects of global warming.</p>