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Defines geography and covers globes, maps, land, water, air, plants, animals, people, and cultures. The newly revised and updated Everything You Need to Know About... series provides kids and parents with a quick refresher to 4th through 6th grade curriculum topics. The organization and scope of these concise homework-help guides make them an essential reference resource. Researched according to middle-grade curriculum and current textbooks, and created in conjunction with subject experts, these titles answer kids' most frequently asked homework questions. In geography, students will find everything from longitude and latitude to the longest rivers on earth.