Which part of the Andes (at the equator or at the Southern Tropic) has more altitudinal zones? Why?

Of course, the most of them are at the equator. Everything is simple here: the higher the ridges of this mountain system, the closer they are to the equator. It is worth knowing that this is one of the highest mountain systems on our planet. The maximum height here is almost seven thousand meters. Well, the average height here is also impressive – four thousand meters. In some places, these mountains are up to 500 kilometers wide. To the east of this mountain system flow rivers that belong to the Atlantic Ocean.