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.
Defining Non-Objective Art. Quite often, non-objective art is used as a synonym for abstract art. However, it is actually a style within the category of abstract work and the subcategory of non-representational art. Representational art is designed to represent real life and non-representational art is the opposite.