1. Growing food at these elevations is always difficult because of the short growing season. 在这种海拔地区种植粮食总是很困难，因为生长季节短。
2. Translocating threatened species to a cooler place, to higher latitudes or higher elevations, for example. 将受威胁的物种迁移到较冷的地方，例如高纬度或高海拔地区。
3. Present-day glaciers are found in Antarctica, in Greenland, and at high elevations on all the continents except Australia. 现在的冰川在南极洲、格陵兰岛和除澳洲以外各洲的高海拔地区都可以看得到。
4. Archaeologists identify a corresponding shift in populations toward the south and west toward Mesa Verde and away from higher elevations. 考古学家发现了一个人口迁移现象，人们向西部、南部的梅萨维德地区搬迁，离开了高海拔地区。
5. As the Little Ice Age progressed, farmers probably moved their fields to lower elevations, infringing on the lands of other farmers and pushing people together, thus contributing to the aggregations. 随着小冰河期发展，农民可能把田地移到了海拔较低的地方，侵占其他农民的土地，把人们挤在一起，从而形成了集群式的社会。
