A biome is a large area characterized by its vegetation, soil, climate, and wildlife. 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. Biomes can be classified into three types, namely terrestrial, freshwater biomes, and marine biomes. Terrestrial biomes include grasslands, deserts, and tropical forests. Freshwater biomes include polar freshwaters, large lakes, tropical and sub-tropical coastal rivers, temperate coastal rivers, and much more. Marine biomes include continental shelves, tropical coral, and kelp forests. Biomes are important for ecological studies since they help in defining the ecosystem changes using remote sensing satellite and may also give us information about the functioning of ecosystems.