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.
Presents an introduction to the rock cycle, the process by which rocks form, break down, and reform over the course of thousands of years, looks at different types of rocks, and examines the forces that cause rocks to change.
Highlights the history, membership, mission, goals, and achievements of Greenpeace. Includes human interest stories, maps, timelines, Web sites, and suggestions for further reading.
Presents an introduction to water pollution, in simple text with illustrations, explaining what it is, and how it effects the environment, and includes information on the different types of pollution, the water cycle, acid rain, and other topics.
Presents a short study of the various rocks and minerals found in the earth and discusses sedimentary, metamorphic, and igneous rocks, how they are formed, man's uses for certain types of rocks, and fossils found in rocks.
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.
