It's where two or more cells involves.
like magnets
Answer:
Polar stratospheric clouds are all in higher layers of the Earth's atmospheres.
I took the test last week
The <span>cloud type that can form from air converging and rising vertically (clouds of vertical development), and is associated with heavy downpours of rain is t</span>he Cumulonimbus. It is a dense towering vertical cloud characterized with thunderstorms and atmospheric instability,<span>heavy rain, snow, hail, lightning and even tornadoes.</span>
