Rainforests have four main layers: the emergent, the canopy, the under canopy and the forest floor. There are many causes of rainforest deforestation, which leads to loss of habitats, soil erosion ...
At around 30-40m, the emergent layer is made up of one or two of the tallest trees in the rainforest. Down near the ground they have wide buttress roots, providing a stable support for the trees.