By 1955, carbon dioxide, heat, humidity, and other contaminants produced by 1,200 visitors per day had visibly damaged the paintings. ... Consequently the cave was closed to the public in 1963, the paintings were restored to their original state and a monitoring system on a daily basis was introduced
<span>Symmetrical balance
is achieved when both sides of a composition look exactly the same by arranging
elements on either side of the center of a composition in an equally weighted
manner. It can also be thought of as 50/50 balance or a mirror image.
Symmetrical balance is used to achieve the effect of order, clarity and
consistency.</span>
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Good. I love the use of reputation