AP BIOLOGY

Detailed explanation-1: -Just as human activities have transformed and evolved over time, so have the places and biomes they inhabit. For instance, hunting may have contributed to the extinction of some megafauna, and the controlled burning of forests dramatically altered their landscape.

Detailed explanation-2: -The most substantial biome shifts occurred where temperature or precipitation changed by one-half to two standard deviations from 20th century mean values. Some examples of biome shifts that occurred include woodlands giving way to grasslands in the African Sahel, and shrublands encroaching onto tundra in the Arctic.

Detailed explanation-3: -As the climate of a biome changes its inhabitants must either adapt to the new conditions or migrate to areas where the new conditions are like what they are accustomed to.

Detailed explanation-4: -Climate is a major factor in determining types of life that reside in a particular biome, and there are several factors that influence climate, such as latitude, geographic features, and atmospheric processes disseminating heat and moisture. The number of biomes that exist is debated by scientists.