Table of Contents

To the Student How to Use This Book Unit One, NATURE Cockroaches: Tough Bugs Quicksand: How Dangerous Is It? Caves: A World Apart Compare and Contrast Unit Two, TECHNOLOGY MP3 Players: Music for the Road Robots: Like Humans...Almost Instant Messaging: Communication at the Speed of Fingers Compare and Contrast Unit Three, FOOD Cheese: How Cheese is Made World Food: Menus Around the Globe Meals, Ready-to-Eat: Food for Soldiers Compare and Contrast

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