Answer:
- high CAPE values
- strong vertical wind shear
- strong upper-level divergence
Explanation:
A supercell thunderstorm is a type of storm that is characterized by a deep and rotating updraft. Supercells can be quite severe, but tend to last between 2 and 4 hours. These storms are particularly associated with the Great Plains area of the United States and the area known as Tornado Corridor in South America (Argentina, Uruguay and southern Brazil).
Well if you mean what does the controlled part of a scientific investigation, it is the part of the investigation that will be your control or your base, untouched, original, data and such.
I would need a picture to help you
