A answered. Atrial fibrillation can be caused by a number of different things that predispose the heart to arrhythmias. Most commonly, longstanding high blood pressure is the cause. Other causes include heart disease such as blockage in the coronary vessels or diseases such as pneumonia or COPD.
A board, typically with a hole for the thumb, which an artist can hold while painting and on which colors are mixed. 2. a. The range of colors used in a visual medium, in a picture, or by an artist: a limited palette.
A ceremonial object, ritually buried. The Palette of Narmer was discovered in 1898 by James Quibell and Frederick Green. It was found with a collection of other objects that had been used for ceremonial purposes and then ritually buried within the temple at Hierakonpolis. Temple caches of this type are not uncommon.