GRE作文改革后对argument写作所造成的变化_GRE写作

GRE作文改革后对argument写作所造成的变化

　　Secondly, specific evidence regarding the change of temperature in the arctic regions is also needed to evaluate the authors reference of global warming. This is because the earths climate is an intricate system and the trend of global warming does not necessarily result in an increase in temperature and cause sea ice to melt in the local arctic regions of interest. If local temperature data illustrate a non-varying or even colder climate, the adoption of global warming to account for phenomena in these regions will be highly suspicious. On the contrary, local temperatures that manifest a climate change consistent with the general trend of global warming will help strengthen this point of reasoning in the argument.

　　Furthermore, even if we corroborate the decline in deer populations and acknowledge a warmer climate in the arctic regions, further evidence is still necessary for an evaluation of the authors causal association of the decline in deer populations with the increased local temperatures. As a matter of fact, the populations of deer depend on more factors than climate alone, such as the quantity of their predators and epidemics. Consequently, it is of great significance to examine all the possible causes for population changes, and find out evidence for the roles they are playing. If evidence demonstrates that reasons other than increased temperatures are primarily responsible for the observed population decline, the purported link between this decline and climate change will be greatly weakened. Nevertheless, on condition that evidence is found to be able to testify the negligibility of all the other influences and rule out all the alternative explanations for the population decline, the causal relationship between the decrease and warmer climate, claimed in the argument, will be considerably strengthened.