User: Many animals have body symmetry with distinct front and back ends. This type of symmetry is A. unilateral symmetry.
Cumulonimbus, from the Latin cumulus (heap) and nimbus (rainstorm, storm cloud), is a dense towering vertical cloud associated with thunderstorms and atmospheric instability, forming from water vapor carried by powerful upward air currents.
A wall cloud: (1) is a cumulonimbus cloud with a flat top (2) is a cumulonimbus cloud with straight vertical sides (3) occurs on the forward edge of a gust front (4) occurs when a mesocyclone extends below a thunderstorm base (5) occurs on the leading edge of a squall line.