why are rainforests called biodiversity hotspots
rainforests are called biodiversity hotspots because of the big amount of flora and fauna it has.here are heavy rains during at least part of the year, and a dense canopy of trees traps a lot of moistur â¦ e in the air below. The rainforests are in tropical regions where the average temperature (and therefore the relative humidity) is comparatively high. It rains a lot, in a forest. 45 people found this useful.