Final answer:
Mountains tend to have more species than lowland regions because a. they have more different habitat types. Climate variation on mountains creates different habitats that support a greater variety of species.
Step-by-step explanation:
Mountains tend to have more species than lowland regions at the same latitude because a. they have more different habitat types than lowlands.
Mountain elevations can create various climate types, which in turn create different habitats that support a greater variety of species. For example, mountains may have different climate zones at different elevations, with permanent ice or snow at higher elevations and more diverse vegetation at lower elevations.