A rainforest, as its name implies, contains a great number of trees and vegetation. Each tree releases a great daily amount of water to the atmosphere through the transpiration process.
Transpiration occurs when the water stored in the tree, is released through the leaves, this water is then evaporated and rises to the atmosphere as water vapor, which then can fall back as rain.
The lack of trees, vegetation, and humidity in a desert make this process nearly impossible. Therefore, the few plants living in the desert use different methods to keep themselves hydrated.
