目录 Careers in Science An Alligator's Sensitive Side Chapter 1 Sponges, Cnidarians, and Worms 1 What Is an Animal? 2 Integrating Mathematics Animal Symmetry 3 Sponges and Cnidarians 4 Worms Chapter 2 Mollusks, Arthropods, and Echinoderms 1 Mollusks 2 Arthropods 3 Insects 4 Integrating Environmental Science Insect Ecology 5 Echinoderms Chapter 3 Fishes, Amphibians, and Reptiles 1 What Is a Vertebrate? 2 Fishes 3 Amphibians 4 Reptiles 5 Integrating Earth Science Vertebrate History in Rocks Chapter 4 Birds and Mammals 1 Birds 2 Integrating Physics The Physics of Bird Flight 3 Mammals Chapter 5 Animal Behavior 1 What Is Behavior? 2 Patterns of Behavior 3 Tech & Design Tracking Migrations Interdisciplinary Exploration The Secret of Silk Reference Section Skills Handbook Think Like a Scientist Making Measurements Conducting a Scientific Investigation Technology Design Skills Creating Data Tables and Graphs Math Review Reading Comprehension Skills Building Vocabulary Appendix A Laboratory Safety English and Spanish Glossary Acknowledgments
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