<P> Tropical rainforests are rainforests that occur in areas of tropical rainforest climate in which there is no dry season--all months have an average precipitation of at least 60 mm--and may also be referred to as lowland equatorial evergreen rainforest . True rainforests are typically found between 10 degrees north and south of the equator (see map); they are a sub-set of the tropical forest biome that occurs roughly within the 28 degree latitudes (in the equatorial zone between the Tropic of Cancer and Tropic of Capricorn). Within the World Wildlife Fund's biome classification, tropical rainforests are a type of tropical moist broadleaf forest (or tropical wet forest) that also includes the more extensive seasonal tropical forests . </P> <P> Tropical rainforests can be characterized in two words: hot and wet . Mean monthly temperatures exceed 18 ° C (64 ° F) during all months of the year . Average annual rainfall is no less than 1,680 mm (66 in) and can exceed 10 m (390 in) although it typically lies between 1,750 mm (69 in) and 3,000 mm (120 in). This high level of precipitation often results in poor soils due to leaching of soluble nutrients in the ground . </P>

Where are the world's tropical forests located