The five main types of environments, or biomes, in the world are the aquatic, forest, desert, grassland and tundra biomes. Each of these can be found in many areas around the world and contribute to the world's ecosystem.
Aquatic environments are found all over the world. Roughly 75 percent of the Earth is covered by water, and all of this water is part of an aquatic environment. The aquatic biome is further divided into saltwater oceans and freshwater environments, such as rivers and lakes.
Forest biomes are characterized by large trees and vegetation. They can be found in cold and warm temperatures around the world. These environments are important to the Earth because they release oxygen into the atmosphere and capture excess carbon dioxide.
Deserts are any type of environment that receives less than 10 inches of precipitation each year. They can be very hot and sandy or very cold and icy.
Grasslands are large biomes characterized by huge open areas that receive between 10 and 30 inches of precipitation per year. These areas are covered mostly by grass and have few trees and other types of vegetation. They are home to a wide variety of animals that use the grass for food.
Tundra is the coldest biome of all of the different environments. Tundras have long, cold winters and very short summers.