Definitions for "Rain forest"
a thick evergreen forest with at least 100 inches (254 cm) of rainfall a year; may be tropical (e.g., Amazon) or temperate (e.g., Pacific Northwest)
a tropical woodland having an annual rainfall of at least 100 inches (254 centimeters) and marked by lofty broad-leafed evergreens forming a continuous canopy; Geography, West
a woodland that usually gets at least 100 inches of rain each year Many special plants and animals can only be found in a rain forest.
Keywords:  unplanned, reef, coral, economy
an unplanned economy, as is a coral reef
Keywords:  jungle, humid, hot
a hot, humid jungle
a self-perpetuating system in that water vapor from trees energizes rainstorms