An ecosystem is a region of land that has its own unique climate and life. The amount of rainfall, temperature and sunlight makes each region the way it is. Also called biomes, these regions of land make up the Earth's surface. All of the Earth's surface, with the exception of the ice in Antarctica and Greenland, fits into one of these ecosystems. Each biome is filled with plants and animals that have adapted to that land.
There are eight biomes in the world, and each one is different than the other. The first one is the ocean. This biome is the largest of all, since water makes up most of the planet. Tropical Forests are unique areas where strange animals thrive in the warm, wet climate. Colder areas that receive enough rain will see temperate forests form. If there isn't enough rainfall, grasslands will fill the region.
Dry, hot regions will become desert, while the frigid cold regions of northern North America and Asia are called tundra. Taiga is the named given to land in between the cold tundra and the warmer temperate forest and grassland biomes. And finally, a very small amount of land in Europe and Australia is called Chaparral.