When you are copying from a direct source.
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>
The brain may send messages directly down nerve cells to the immune system. ... Receptors in muscles provide the brain with information about body position and movement. The brain controls the contraction of skeletal muscle. The nervous system regulates the speed at which food moves through the digestive tract.
