Multiple Choice
At any given time, an estimated ________ thunderstorms are in progress on Earth, most of them in the tropics. This results in around ________ thunderstorms on Earth every day.
A) 20; 450
B) 200; 4,500
C) 2,000; 45,000
D) 20,000; 450,000
Correct Answer:

Verified
Correct Answer:
Verified
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