In a thunderstorm, the falling rain creates
A) an updraft that generates a storm cell within the cloud.
B) a downdraft, chilling the air and making it denser than the surrounding air.
C) a downdraft, chilling the air and making it less dense than the surrounding air.
D) an updraft, chilling the air and making it denser than the surrounding air.
Question 2
The birth of a thunderstorm occurs when
A) warm, humid air rises in a stable environment.
B) warm, humid air rises in an unstable environment.
C) a cold front encounters a warm front.
D) a maritime polar air mass encounters a maritime tropical air mass.
Diagram of a flagellate stramenopile cell, showing characteristic flagellar hairs.
Parts of the Cell
Plant cell structure
IgE binding to a mast cell.
Cell Surface Regulators
Cell-to-cell interactions