Answers

2014-02-06T16:31:06+08:00
Tornado: cone shaped, rotated column, connected with strong cyclonic winds and heavy rains, high frequency: more than 1200 in the USA, present in every continent excluding Antarctica.

Hurricane: symmetrical-shaped cyclone, lower frequency than tornado (10-15 per year, mostly on Caribbean Sea), connected with heavy wind, floods, occurs in warm areas.
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