Tropical rainforests lie along the equator, mainly between the Tropics of Cancer and Capricorn. Rainforests have four main layers: the emergent, the canopy, the under canopy and the forest floor.

This helps the plants and trees to flourish. Similar to a tropical rainforest, deciduous woodland is made up of four different layers. Depending how wet it is on the ground, you may find mosses ...

and a ground layer of herbaceous vegetation. Tropical forests have the highest biodiversity and primary productivity of any of the terrestrial biomes. Net primary productivity ranges from 2–3 kg ...