Which mountains have the greatest number of altitudinal zones. Which ones have the smallest? Why?

The greatest number of altitudinal belts is present in the mountains that are close to the equator. Their height is over 6,000 meters. Among these mountains are the Himalayas in Eurasia, the Andes in South America, etc. All existing high-altitude zones are present in the listed mountain systems, from tropical rainforests to glaciers. This is due to the fact that the climate in these regions is very warm, and it is always cold on the mountain tops. Therefore, the number of altitudinal zones is large and varied.

The smallest number (only one belt) is in the mountains beyond the Arctic Circle. Among them are the peaks of the Antarctic (Vincent Massif) and the Arctic (parts of the Northern Urals).