The answers are:
- very high humidity
- vines
- palms
- highest species diversity
- gorillas
Rainforests have very high humidity because it rains throughout the whole year and is constant summer, so the precipitation and high temperature contribute to very high humidity.
The rainforests have the highest species diversity of any biome, both animals, and plants, including plants like the vines that crawl on the other trees and the palms, as well as animals like the gorilla in Africa, in the Congo basin.
