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What is the "food chain"?
How is rock recycled?
Cycles in Science examines the rhythms and cycles of science, providing a simple framework in which concepts of astronomy, biology, physics, and chemistry are explored. Each book contains:
-- accessible explanations of scientific concepts,
-- interesting examples from everyday life, and
-- a helpful glossary and index.
32 pages, Library Binding
First published March 1, 1998