Final answer:
The tropical grasslands in the mentioned regions are called Cerrado, Llanos, Savanna, and Veld. They have economic importance in agriculture, livestock grazing, and tourism.
Step-by-step explanation:
The tropical grasslands in the Brazilian plateau are called Cerrado. In the Orinoco basin, they are known as Llanos. In the Central African region, they are referred to as Savanna, and in the South African plateau, they are called Veld.
These grasslands have significant economic importance:
- Agriculture: The Brazilian Cerrado is one of the country's major agricultural regions, producing soybeans, grains, and cotton on a large scale. The Central African savanna supports agriculture and is used for cultivation of crops like palm oil trees and yams.
- Grazing Livestock: The grasslands provide grazing grounds for livestock in all regions. Cattle ranching is particularly important in South African Veld and Brazilian Cerrado.
- Tourism: The scenic beauty of the grasslands, with their diverse wildlife and unique ecosystems, attracts tourists and generates revenue through nature-based tourism activities.