How does the change of altitude zones in the mountains take place?

The change in climatic and natural zones on the planet occurs in two cases: when moving from the equator to the south or north, or with increasing altitude. In both cases, temperature and humidity begin to decrease, and this affects nature. In the mountains, the belts change, because with each kilometer of altitude, the temperature decreases by 3-4 degrees. And each strip has its own natural zone with characteristic vegetation and animals. Some mountains have all the existing zones, from equatorial forests to glaciers.