Answer:
A. 100 miles
Step-by-step explanation:
Each mile of Altitude is equal to 100 miles of latitude which affects the temperature regimes and community zonation. Zonation refers to the patterns that are observed in a community over a distance, based on the distinct fauna and flora found along the area. As, montane habitats are separated by intervening lowland areas (or lowland habitats separated by mountains) may serve as refugia where populations become geographically isolated from each other as they track suitable habitats to higher or lower elevations in response to climate change (for example, two mesic-adapted species separated by warmer, drier lowland environments, or two xeric-adapted species separated by cool, moist mountain ranges.