What are 3 characteristics of a tornado?

Explanation:

Features. A tornado is a swirling vortex or column of air with a hollow core. The circulating air often contains debris and dust and moves in an upward spiral at high speeds. The bottom of the tornado column makes contact with the ground, while the top of the tornado can extend 5 or more miles into the sky.

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if the person is shown to have +90n, then ans is -10n.

if the person is shown to have -90n, then ans is +10n.