PLS HELP ASAP What causes a tornado to form? Water vapor condenses, giving off energy. Wind over ocean water forces water vapor upward. A warm, moist air mass collides with a cold, dry air mass. Air pressure changes suddenly, causing rapid air movement.

Protein and polypeptide sequences can be determined by first partially hydrolyzing the protein or polypeptide followed by amino acid sequencing of the fragment pieces using the chemical degradation process known as edman degradation. determine the sequence of the initial (18-amino acid) polypeptide that produces the following five partial sequences after hydrolysis and edman degradation.