The temperate grasslands of South America are called Pampas. Let's understand why:

Geographical Location:
The Pampas are located in South America, primarily in Argentina, Uruguay, and Brazil.

Climate:
The climate of the Pampas is temperate, with warm summers and cool winters. The average temperature is around 18°C. The region receives moderate rainfall, with most of it occurring during the summer months.

Vegetation:
The Pampas are characterized by vast stretches of grasslands, with very few trees. The grasses are adapted to the temperate climate and grow to a height of 1-2 meters. The most common grass species found in the Pampas are buffalo grass, tall fescue, and lovegrass.

Wildlife:
The Pampas are home to a diverse range of wildlife, including the Argentine black and white tegu, the Pampas deer, the rhea, and the Pampas fox. The region is also known for its birdlife, with species such as the burrowing owl, the red-gartered coot, and the white-faced ibis.

Human Activity:
The Pampas are primarily used for agriculture and cattle grazing. The region is known for its production of wheat, corn, and soybeans. The cattle industry is also a significant contributor to the economy of the region.

Conclusion:
In conclusion, the Pampas are the temperate grasslands of South America, primarily located in Argentina, Uruguay, and Brazil. The region is characterized by its temperate climate, vast stretches of grasslands, diverse wildlife, and agricultural and cattle grazing activities.