ANSWER:
The landform labeled with the 'number 3' on the map is the Atacama Desert, and the landform labeled with the 'number 2' is the Amazon River Basin.
Step-by-step explanation:
- The Atacama Desert is known as the place which is located in the high lands located in "South America" which has covered the area up to 1,000 km of the open land covering the distance up from Pacific coast to "west of the Andes mountains".
- Brazilian Highlands is believed to be located on the Portuguese Planalto Central in the region of southern Brazil.