"The has outright destroyed s, and where it did not, it altered them drastically to the detriment of wildlife and often people themselves. Over the last century, the more the population grew, the more es flowed into the , and the greater the impact on wildlife were, all of which required specific temperature ranges other limited climatic conditions. And the more people there are, the more cities, roads, farm fields, fences, and other barriers there are preventing wildlife from living in or moving to areas of more favorable temperature or humidity in a rapidly changing climate."