Explanation:

- Amazon:

- The Amazon is a tropical rainforest.

- It is known for its rich biodiversity.

- Located mainly in Brazil.

- Prairies:

- These are temperate grasslands in North America.

- Known for vast open areas and rich soil.

- Congo:

- The Congo refers to a rainforest region.

- Located in central Africa.

- Known for dense forests and varied wildlife.

- Steppes:

- Temperate grasslands found in Russia and Central Asia.

- Characterized by large open plains.

- Known for extreme temperature variations.

Correct Answer: Steppes