The two Donatello's characteristic formal contributions are encountered in the work for Baptistery of Siena. He demonstated it through organizing the relief by a rigorous application of the rules of perspective. Even though it was created at a shallow deptht, this technique makes each figure of a scene emerge clearly and very logically. This technique is determined as a flattened relief.
The correct answer is Classical music.
If by properties, you mean what wool is composed of, it would be carbon, hydrogen, nitrogen.
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