Answer:
1.) A Category 1 tropical cyclone is estimated to have 10-minute sustained wind speeds of 34–47 kn (39–54 mph; 63–87 km/h), while a Category 2 tropical cyclone is estimated to have 10-minute sustained wind speeds of 48–63 kn (55–72 mph; 89–117 km/h).
2.) Low pressure areas form when atmospheric circulations of air up and down remove a small amount of atmosphere from a region. ... The warming causes the air layer to expand upward and outward, removing some of the air from the column, and thus reducing the surface air pressure.
Explanation:
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