A tornados rotation is created by ____.
a. rotation of the thunderstorm cloud
b. upward flowing air in the center of a thunderstorm interacting with downward flowing air at the edges
c. surface winds blowing in the opposite direction of the thunderstorm downdraft
d. surface wind shear in an area where warm, humid air is rising over advancing cold air
e. rising surface air meeting a downburst at the trailing edge of a thunderstorm
Question 2
Tornadoes are the most significant natural hazard in the American ____.
a. Southwest
b. Midwest
c. South
d. Northeast
e. Northwest
Boundaries within landscapes created by human activity (background) and natural environmental gradie
The Rotation Curves of Four Spiral Galaxies
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Individuals from highly divergent lines created by artificial selection