A biome is a large community of vegetation and wildlife adapted to a specific climate. It is a biogeographical unit consisting of a biological community that has formed in response to the physical environment in which they are found and a shared regional climate. Biomes may span more than one continent and can comprise a variety of habitats. Biomes are classified according to the species that live in that location, and temperature range, soil type, and the amount of light and water are unique to a particular place and form the niches for specific species allowing scientists to define the biome.

There are several types of biomes, including:

• Tundra: This biome is characterized by extremely cold temperatures and low precipitation. It is found in the Arctic and Antarctic regions.

• Forests: This biome is characterized by trees as the main plants. There are several different types of forest biomes, including temperate deciduous forests, tropical rainforests, and taiga.

• Grasslands: This biome is characterized by grasses as the main plants. There are two types of grasslands: temperate grasslands and tropical grasslands, also known as savannas.

• Deserts: This biome is characterized by extremely dry conditions and receives less than 10 inches of rain each year. Cacti and creosote bushes are two types of plants that can survive in this biome.

• Aquatic: This biome is characterized by water and includes freshwater and marine biomes. The largest water biome is the ocean.

The number of biomes can range anywhere from 5 to 20 biomes, depending on the classification system used.