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| Description: The Moon’s surface is covered by a layer of (a) powdered rock and (b) small pieces of rock. Called regolith, the powdered rock was created over billions of years as a result of bombardment by space debris; it sticks together like wet sand, as illustrated by this Apollo 11 astronaut bootprint. Picture Stats: Views: 516 Filesize: 709.48kB Height: 900 Width: 1045 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=15986 |