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.
Cloud Types common cloud classifications. Clouds are classified into a system that uses Latin words to describe the appearance of clouds as seen by an observer on the ground. The table below summarizes the four principal components of this classification system (Ahrens, 1994). Further classification identifies clouds by height of cloud base. For example, cloud names containing the prefix cirr-, as in cirrus clouds, are located at high levels while cloud names with the prefix alto-, as in altostratus, are found at middle levels. This module introduces several cloud groups.
Clouds found in the low altitude range are indicated by the prefix âstratoâ or by the suffix âstratus.â Their bases are below 2,000 meters (6500 feet) in altitude, and except in cold weather when they can contain ice and snow, they are composed of water droplets. Three types of low altitude clouds are stratus, stratocumulus and nimbostratus. Stratus clouds are gray clouds that often cover the entire sky.