Tornadoes produce low pressure.
Tornadoes are themselves small low pressure areas, and generally form with low pressure systems. Most low pressure systems, however, do not produce tornadoes.
Not directly, but the systems that produce tornadoes do have low barometric pressure.
Yes. Tornadoes and hurricanes are both areas of low pressure.
Tornadoes can probably occur in any country as any place that can get thunderstorms can get tornadoes.
Tornadoes and other forms of severe or stormy weather are associated with low pressure.
Like nearly all stormy weather, tornadoes are usually associated with low pressure.
No. Like virtually all stormy weather, tornadoes are associated with low pressure areas. Tornadoes themselves produce intense low pressure.
75 percent of recorded tornadoes occur in the U.S. However, this is misleading as unlike the U.S. many countries do not keep records, resulting in tornado numbers outside the U.S. that are unrealistically low.
If you mean a low pressure system. Then no, low pressure systems may throw out impulses cause severe rotation and tornadoes but they do not start as a low pressure system.
There were 934 tornadoes in the U.S. in 2002. Worldwide it is harder to determine as many countries do not keep records of tornadoes
Both tornadoes and hurricanes are associated with low pressure.