A prairie is a type of ecosystem that is part of the temperate grasslands, savannas, and shrublands biome. It is characterized by flat or rolling grasslands with moderate temperatures, moderate rainfall, and few trees. Prairies are made up of mostly grasses, sedges, and other flowering plants called forbs. They contain various lush flora and fauna, often contain rich soil maintained by biodiversity, with a temperate climate and a varied view. The word "prairie" comes from the French word for "meadow".

There are three basic subtypes of prairie: tallgrass prairie, midgrass or mixed-grass prairie, and shortgrass prairie or shortgrass plains. The vegetation in tallgrass prairie is composed primarily of perennial grasses, with many species of flowering plants of the pea and composite families. Midgrass or mixed-grass prairie supports both bunchgrasses and sod-forming grasses, and species of porcupine grass, grama grass, wheatgrass, and buffalo grass dominate the vegetation. Shortgrass plains occupy the driest part of the prairie and are covered primarily by species of buffalo grass and grama grass.

Prairies are mainly found in the interior lowland areas of North America, particularly in the Great Plains region, which includes most of the states of North Dakota, South Dakota, Nebraska, Kansas, and Oklahoma. They have been important sources of food for many grazing animals, including cattle, deer, buffalo, and rabbits. The climate of prairies is influenced greatly by their central location, and they can experience a wide range of temperatures, from hot summers to cold winters. In addition to temperature fluctuations, prairies are also known for their strong winds.