A temperate grassland in North America is called a prairie.

Prairies are vast expanses of grasslands found in the central part of North America, particularly in the United States and Canada. They are characterized by their flat terrain and the dominance of grasses, as well as a lack of trees or shrubs.

Here are some key points about prairies:

1. Location: Prairies are primarily found in the central United States, in states such as Kansas, Nebraska, and Iowa. They also extend into parts of Canada, particularly in the provinces of Alberta, Manitoba, and Saskatchewan.

2. Climate: Prairies have a temperate climate, with hot summers and cold winters. They receive moderate rainfall throughout the year, which is sufficient to support the growth of grasses but not enough to sustain large trees.

3. Vegetation: Grasses are the dominant plant species in prairies. They have adapted to the prairie environment by having deep root systems that allow them to access water stored in the soil. Common prairie grasses include buffalo grass, blue grama, and big bluestem.

4. Wildlife: Prairies support a diverse range of wildlife. Many species of herbivores, such as bison, pronghorn, and deer, graze on the grasses. This, in turn, attracts predators like coyotes and birds of prey. Prairies are also important habitats for grassland birds, such as meadowlarks and prairie chickens.

5. Human Impact: Historically, prairies were home to Native American tribes who relied on the grasslands for hunting and gathering. With the arrival of European settlers, however, much of the prairie was converted into agricultural land for farming. Today, only a small fraction of the original prairie ecosystem remains intact.

In conclusion, a temperate grassland in North America is called a prairie. Prairies are characterized by their grassy vegetation, temperate climate, and diverse wildlife. They have been greatly impacted by human activities, but efforts are being made to preserve and restore these valuable ecosystems.