31. What is the capital of Argentina?
32. Which is the highest waterfall in the world?
33. What is the temperature at earth's core?
34. Which study describes the large scale motion of Earth's lithosphere?
35. Where is suez canal located?
36. Which is the deepest point in the world?
37. Which is the tallest dam in the world?
38. Which was the most powerful earthquake ever recorded?
2004 Indian Ocean earthquake
1960 Valdivia earthquake
1964 Alaska earthquake
1868 Arica earthquake
39. Which country has the largest thorium reserves in the world?
40. Which is the largest freshwater lake in the world?