Answer: Ablation is a procedure that's been available now for 10 or 15 years or more, that is to eliminate heart rhythm disorders mostly now in what we call the upper chamber, or the atrium.nswer: Ablation is a procedure that's been available now for 10 or 15 years or more, that is to eliminate heart rhythm disorders mostly now in what we call the upper chamber, or the atrium.
Cumulus clouds look like fluffy tufts of cotton floating in the sky. Sometimes they might take the shape of a dragon, a turtle or some other creature. Cumulonimbus clouds are large, flat clouds that spread across the sky. One end of the cloud might be shaped like an anvil.
The categories are simple - low clouds, middle clouds, and high clouds. Low clouds can have a base from the ground up to about 6,500 feet. Some clouds in this category include cumulus, cumulonimbus, and stratus clouds. Middle clouds can have a base ranging from about 6,500 ft to about 20,000 feet up. Some clouds in this category include altocumulus, altostratus, and nimbostratus.