Each book in the DK Readers series is specially crafted to suit the interests and learning stage of beginning readers. The five levels progress from easy-to-follow stories with simple sentences and word repetition to more sophisticated storylines, sentence structure, and vocabulary as children enjoy full-color photographs, sidebars and definition boxes, and lots of exciting information about the topics they love. In this book: We can make our world a cleaner and healthier place to live. Join Sophie and Spencer to find out how.
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