英语学术写作--环境保护.docxVIP

English Academic Writing9June 2011The Possible Effects of Global Warming on Animals and Plants 1.OutlineThe definition and the causes of the global warming The causes of global warming’s effect on animals and plants Other factors that may affect future animals and plants Factors due to global warming carbon dioxidePeople’s killingFactors due to humansPeople’s killing and cutting down The emissions of something toxic2. AbstractHumans are engaged in an uncontrolled experiment in planetary heating. Each decade, the concentration of CO2, methane and other greenhouse gases in the atmosphere is increasing by about 4%. All signs point toward unprecedented rates of warming and climate change. Many plant and animal species living in natural ecosystems will perish because they will be unable to keep up with shifting climatic zones. Warming exacerbates another biomedical problem – the influx of alien animals, plants and pathogens. These introduced species, many from the tropics, will not only increase the variety and incidence of tropical diseases, but will also affect the quality of the wilderness experience and hence, the popularity of outdoor recreation. Some personal actions and political prophylaxis are recommended. (Journal of Wilderness Medicine, Volume 3, Issue 4, November 1992, Page 469)In the geologic past, natural climate changes have caused large-scale geographical shifts in species ranges, changes in the species composition of biological communities, and species extinctions. If the widely predicted greenhouse effect occurs, natural ecosystems will respond in similar ways as in the past, but the effects will be more severe because of the extremely rapid rate of the projected change. Moreover, population reduction and habitat destruction due to human activities will prevent many species from colonizing new habitat when their old becomes unsuitable. The synergy between climate change and habitat destruction would threaten many more species than either factor alone.K