The llanos and the pampas are two grasslands areas in south america. a. true b. false

True

The Llanos is a grassland that goes across northern South America, occupies the western Venezuela and northeastern Colombia. The Llanos are approximately 220,000 square miles.
The Pampas, are also a grassland that extend across central Argentina, from the Atlantic coast to the Andean foothills and covers more that 289,577 square miles.

Humans increased food production by farming.

What exactly do you mean