As the altitude increases, the climate becomes cooler, the rainforest changes from a Subtropical Rainforest, to a Warm-Temperate Rainforest, then it can change again to a Cool-Temperate Rainforest all within a relatively small area.
(the climate; becomes; cooler) (it; can change; T:again; to a Cool-Temperate Rainforest; L:all within a relatively small area; T:then)
the climate it
becomes can change
cooler
T:again to a Cool-Temperate Rainforest L:all within a relatively small area T:then