The Amazon basin lies in the equatorial region, owing to which it has a hot and wet climate throughout the year. The high temperature and heavy rainfall give rise to dense and luxuriant vegetation in the Amazon basin. The evergreen tropical rainforests of this area are the largest of their kind and are known as selvas. The trees are tall with hard wood and broad leaves that form a canopy at the top. This prevents sunlight from entering the forests and the interiors are dark and damp. Mosses and ferns are found growing on the ground. Climbers like liana are found along the tall tree trunks. The important trees of the Amazon basin are ebony, mahogany, rosewood, rubber and cinchona. These trees provide us with a variety of useful products like timber, wax, resins, fibres, rubber and nuts.