1. What sea separates Europe and Africa?

2. Which U.S. state is known as the “Sunshine State”?

3. What is the capital city of Russia?

4. What is the largest island in the world?

5. Why is it famously easy for humans to float in the Dead Sea?

6. What unusual phenomenon happens to the Tonle Sap River during the monsoon season?

7. What is the name of the 'Empty Quarter,' the world's largest continuous sand desert?

8. Why are ancient shipwrecks so well-preserved at the bottom of the Black Sea?

9. What was the name of the prehistoric land bridge that once connected Asia and North America across the Bering Sea?

10. The Saguaro cactus, a symbol of the American West, is native only to which desert?

11. What is the highest peak in the Atlas Mountains?

12. What is the Rio Grande called in Mexico?

13. Which mountain ranges create the rain shadow that forms the Chihuahuan Desert?

14. The Celtic Sea is located off the southern coast of which country?

15. The 'Gateway to Hell' (Darvaza Gas Crater) is located in which desert?

16. What primary factor gives the Yellow Sea its name?

17. What unique meteorological feature makes the Sonoran Desert more diverse than other North American deserts?

18. Why is it famously easy for people to float in the Dead Sea?

19. Which cold ocean current is responsible for the fog that sustains life in the Namib Desert?

20. How many capital cities does the Danube River flow through?