This document describes the major land biomes on Earth, including forests, grasslands, deserts, and tundra. Forest biomes include temperate deciduous forests, coniferous forests, and tropical rainforests. Grasslands include temperate grasslands, savannas, and tundra biomes include polar tundra and alpine tundra. Each biome is defined by characteristic climate conditions like temperature and rainfall as well as the types of plants and animals found there.