The South American treeless plain is a vast grassland ecosystem that covers parts of Argentina, Uruguay, and Brazil. It is known by two names: PAMPAS (6 letters) and PAMPA (5 letters). The PAMPAS are characterized by their flat terrain, rich soil, and temperate climate, making them ideal for agriculture. The PAMPAS are home to a variety of wildlife, including birds, reptiles, and mammals. They are also an important source of food for local communities.