Answer the following in one word:

1. The largest country of South America.
2. An archipelago found at the eastern tip of South America.
3. The intermontane plateau in the Andes.
4. A majestic volcano in South America.
5. The largest lake in South America.

Describe the location of South America.

Name the three rivers that make up the Paraguay river basin.

Write a short note on Amazon basin, Gran Chaco and Pampas.