"Did you know the bottom of a slug is called its foot? To move, a slug sends a ripple down its foot, which pushes it forward. For these and other fascinating facts, read Slugs, a book in the Everything About Bugs series"--.
An introduction to sediment, covering what it is, where it fits into the rock cycle, where it can be found, and more. Includes audio, videos, activities, weblinks, slideshows, transparencies, maps, quizzes, and supplementary resources.
An introduction to magma, covering what it is, where it fits into the rock cycle, where it can be found, and more. Includes audio, videos, activities, weblinks, slideshows, transparencies, maps, quizzes, and supplementary resources.