Answer: The geologic time scale is divided based on the major changes in the earth’s surface and climate, and the other thing that divides them is the extinction of species. The appearance and disappearance of fossils also help influence this division.
Explanation:
Though Donatello was a descendant of a branch of the important Bardi family, he was brought up in a more plebeian tradition than his older contemporary Lorenzo Ghiberti. Gifted with humanistic insight and a quality of will that were highly prized in the early Renaissance, Donatello revealed the inner life of his heroic subjects, memorable images which have conditioned our very conception of 15th-century Florence. Sharing neither Ghiberti's feeling for line nor Filippo Brunelleschi's interest in proportion, Donatello worked creatively with bronze, stone, and wood, impatient with surface refinements and anxious to explore the optical qualities he observed in the world about him. His later art, saturated with the spirit of Roman antiquity, is frequently disturbing in its immediacy as it attains a level of dramatic force hitherto unknown in Italian sculpture.
wild lines are lines that actors repeat when they weren't clear enough to be heard the first time. Theatrical productions are live, and you cannot go back and change what has already been done.