61. Which country is the largest producer of uranium in the world?
A) Kazakhstan
B) Canada
C) Australia
D) United States
62. Which country is the largest producer of natural gas in the world?
A) United States
B) Russia
C) Iran
D) Qatar
63. Which country is the largest producer of crude oil in the world?
A) United States
B) Russia
C) Saudi Arabia
D) Iran
64. Which country is the largest producer of coal in the world?
A) China
B) United States
C) India
D) Australia
65. Which country is the largest producer of petroleum in the world?
A) United States
B) Russia
C) Saudi Arabia
D) Iran