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Nature is the source of man's life since ancient times. People

Nature is the source of man's life since ancient times. People

live in harmony with environment. The development of man's civilisation increased harmful interference in nature .
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Tornadoes are storms with very strong turning winds and dark clouds

Tornadoes are storms with very strong turning winds and dark clouds

These winds are perhaps the strongest on earth. They reach speeds of 300 miles per hour. The dark clouds are shaped like a funnel wide at the top and narrow at the bottom. Tornadoes are especially common in the United States, but only in certain parts
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Tornadoes are especially common in the United States, but only in

Tornadoes are especially common in the United States, but only in

certain parts. They occur mainly in the central states. A hot afternoon in the spring is the most likely time for a tornado .Become dark Clouds There is thunder, lightning, and rain. A cloud forms a funnel and begins to twist. The funnel moves faster and faster. The faster The winds, the louder the noise. Tornadoes always move in a northeastern direction.
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A tornado's path is narrow, but within that narrow path a

A tornado's path is narrow, but within that narrow path a

tornado can destroy everything. It can smash buildings and rip up trees. Tornadoes can kill people as well.