Which of the following forecasts for the longe
问题详情
Which of the following forecasts for the longer-term nutrient budget in the two 15-hectare areas compared in Table 2 on page 48 is most reasonable？
A.Nutrient losses in the deforested area will slowly decline while nutrient losses in the undisturbed area will increase.
B.Both the undisturbed and deforested areas will experience increasing losses of nutrients.
C.Nutrient losses in the deforested area will slowly increase while nutrient losses in the undisturbed area will slowly decrease.
D.Nutrient losses in the undisturbed area will remain stable over the longer term while nutrient losses in the deforested area will slowly decline.请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：D
Table 2 shows no clear trend in the undisturbed area; thus it is reasonable to forecast no marked change over the longer term. Although the table shows increasing losses in nutrient matter in the deforested area over the three-year period of the study, no evidence is given suggesting that this trend will continue indefinitely. To the contrary, the fact that the ecologists applied herbicide to the deforested area to prevent organic matter from growing there strongly suggests that, over time, organic matter will reappear in the area, thereby slowly reducing the net losses of nutrients in that area.
