1. Llanos — The Orinoco Plains are called llanos which means plains in Spanish.
2. Selvas — The Amazon Lowlands are called selvas.
3. Pampas — The temperate grassy plains of Argentina are called pampas.
4. Gran Chaco — The vast alluvial region which is not drained well and become marshy during rainy season in Parana- Paraguay lowlands are called Gran Chaco.
