Paragraph 1：A major question in the archaeology of the southwestern region of the United States is why so many impressive settlements, and even entire regions, were abandoned in prehistoric times. Archaeologist Tim Kohler has suggested that the nature of human-environmental interaction was an important reason in the case of the Anasazi people. The actual case study that Kohler relies on is from the Dolores River basin of southwest Colorado, where the Anasazi seem to have moved in about A.D. 600. Over the following couple of centuries, the population increased, and they aggregated (or gathered) into villages, but by about A.D. 900 the area began to be abandoned. Other archaeologists have identified the immediate cause of this abandonment to be a series of short growing seasons that would have put pressure on corn production at that high an altitude. Kohler, however, asserts that a growing population led to human-environmental interactions that caused people to live in villages, intensify agrarian food production, deforest the region, deplete the local soils, and ultimately abandon the area.
完整版题目和答案请付费后查阅
