书籍介绍
Life cycle timeline/Labeled diagram of animal/Glossary/Sidebars/Further Reading/Book List/Index/Content Consultants/Safe Web sites at www.FactHound.comBenchmarks for Science Literacy: The Nature of Science: The Scientific Enterprise; National Science Education Standards: Life Science Content Standards C: Organisms and their Environments. Quizzes at www.picturewindowbooks.com
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