Temperate forests correspond to forest concentrations formed in the northern and southern hemisphere, or in temperate regions. Main characteristics include: wide leaves, large and tall trees and non seasonal vegetation. Temperate forests can be further distinguished by weather patterns and geographical features that favor the predominance of certain kinds of trees. In temperate coniferous forests, evergreen conifers predominate, while in temperate broadleaf and mixed forests, a more even distribution exists between evergreen and deciduous trees. Temperate deciduous forests, a subgroup of temperate broadleaf forests, consist of trees that lose their leaves every year. Finally, temperate rainforests typically have heavy rainfall and dense humidity.