Ostopowich, Melanie

Discusses how rocks change over time, the effects of weathering and erosion on rocks, and how the shifting of tectonic plates affected Earth's structure.

Analiza c?mo las rocas cambian con el tiempo, los efectos de la intemperie y la erosi?n en las rocas, y c?mo el cambio de las placas tect?nicas afect? la estructura de la Tierra.

From landfills to recycling. Waste explores the basic science concepts behind the way we process garbage.

Provides answers to questions about the science behind waste and includes information about waste management careers, and a related experiment.

Presents an introduction to water pollution, in simple text with illustrations, explaining what it is, and how it affects the environment, and includes information on the different types of pollution, the water cycle, acid rain, and other topics.

An exploration of rocks that describes the three main types, formations and where they are found, the work of geologists, rock cycles, and other related topics. www.av2books.com (book code J66825, security question "Crystal".

An introduction to the rock cycle that discusses types of rocks, how it works, weathering, erosion, sediment, fossils, the work of geologists, and other related topics. www.av2books.com (book code E454830, security question "not".

Presents an introduction to water pollution, in simple text with illustrations, explaining what it is, and how it affects the environment, and includes information on the different types of pollution, the water cycle, acid rain, and other topics. Includes audio, videos, activities, weblinks, slideshows, transparencies, maps, quizzes, and supplementary resources.

An introduction to oceans, lakes, and rivers that discusses their role in the water cycle and examines how water is used and protected and includes a quiz and an activity. Includes audio, videos, activities, weblinks, slideshows, transparencies, maps, quizzes, and supplementary resources.

An introduction to oceans, lakes, and rivers that discusses their role in the water cycle and examines how water is used and protected and includes a quiz and an activity. Includes audio, videos, activities, weblinks, slideshows, transparencies, maps, quizzes, and supplementary resources.