Which biome is the most widespread and diverse?

According to the University of California Museum of Paleontology, the forest biome is the most widespread and diverse.

A forest is an area that is covered with many trees and undergrowth. There are many varieties of trees that are adapted for all sorts of climates. Therefore, forests can be found at nearly every latitude on Earth.

There are three types of forests: tropical, coniferous, and temperate.  The trees found within each type of forest vary due to differences in rainfall and temperature of the areas in which they are found. For example, coniferous forests are located in cooler regions and house many conifers. Conifers are trees that have needles. The needles of conifers are leaves that have adapted to prevent water loss. This is needed because coniferous forests are located in cooler regions where the water may be frozen. Additionally, needles are able to sustain colder temperatures.