Alpine tundra is cold and dry because it is a high latitude and arctic tundra is cold and dry because it is at a high altitude.
Alpine tundra is a type of natural region or biome that lacks trees due to its high elevation and associated harsh climate. Low temperatures and precipitation; harsh cold winds; low-lying vegetation; thin, dry, and poorly developed soils; and rapidly changing weather characterize the alpine tundra. Because of these conditions, the alpine tundra is a treeless habitat.
Tundra ecosystems are treeless areas found in the Arctic and on mountain peaks where the climate is cold and windy and rainfall is scarce. Much of the year, tundra lands are covered in snow, but summer brings bursts of wildflowers.
To learn more about tundra, here
https://brainly.com/question/2018762
#SPJ4