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viii ContentsModule 45 Review 657AP%u00ae Exam Practice Questions 658Module 46 Cities and Globalization 660The Rise of World Cities 660Connections and World Cities 663Module 46 Review 664AP%u00ae Exam Practice Questions 664Module 47 The Size and Distribution of%u00a0Cities 667Urban Systems 667Rules to Explain Urban Hierarchy 667Christaller%u2019s Central Place Theory 670The Gravity Model 673Module 47 Review 674AP%u00ae Exam Practice Questions 674Module 48 The Internal Structure of Cities 678Models and Theories to Describe the Internal Structure of North American Cities 678Models to Describe the Structure of Latin American, Southeast Asian, and sub-Saharan African Cities 682Module 48 Review 685AP%u00ae Exam Practice Questions 686Module 49 Density, Land Use, and%u00a0Infrastructure 689Factors That Shape Metropolitan Regions 689Recent Infrastructure, Economic, and Housing Patterns in Cities 694Module 49 Review 697AP%u00ae Exam Practice Questions 697Module 50 Urban Sustainability 699Sustainable Design and Zoning in Urban Geography 700Responses to Urban Design Initiatives 706Module 50 Review 709AP%u00ae Exam Practice Questions 710Module 51 Challenges of Urban Changes 713Economic Challenges Resulting from the Movement of Urban Populations 713Social Challenges for Cities 716Responses to Economic and Social Challenges in Urban Areas 721Urban Renewal and Gentrification 722Fragmentation and Local Government 725Module 51 Review 727AP%u00ae Exam Practice Questions 728Module 52 Challenges of Urban Sustainability 730Challenges to Urban Sustainability 730Responses to Sustainability Challenges in Cities 737AP%u00ae SUBJECT TO DEBATE Air and Water: Can Urbanization Be Environmentally Sustainable? 738Module 52 Review 741AP%u00ae Exam Practice Questions 742AP%u00ae SEEING GEOGRAPHY 746Unit 6 AP%u00ae Exam Practice Questions 747Module 39 Review 558AP%u00ae Exam Practice Questions 559Module 40 The Global System of Agriculture 562The Global Supply Chain 562Export Commodities and Their Impacts on Countries 564Other Factors That Impact the Global Food Distribution Networks 566Module 40 Review 570AP%u00ae Exam Practice Questions 570Module 41 Consequences of Agricultural Practices 574Impacts of Agricultural Practices and Land Use on the Environment 574Impacts of Agricultural Practices on the Landscape 578Impacts of Agricultural Practices on Society 584AP%u00ae SUBJECT TO DEBATE Who Gets to Pump the Aquifers Dry? 585Module 41 Review 587AP%u00ae Exam Practice Questions 587Module 42 Challenges of Contemporary Agriculture 590Sustainability of Contemporary Agricultural Innovations 590Alternatives to Commercial Agriculture and GM Foods 594Contemporary Challenges to Feeding the Global Population 599Economies of Scale in Food Production and Distribution 603Module 42 Review 604AP%u00ae Exam Practice Questions 605Module 43 Women in Agriculture 608Women in the Agriculture Labor Force 608Differences in Women%u2019s Roles in Subsistence and Commercial Agriculture 611Module 43 Review 617AP%u00ae Exam Practice Questions 617AP%u00ae SEEING GEOGRAPHY 621Unit 5 AP%u00ae Exam Practice Questions 622AP%u00ae SKILLS WORKSHOP Scale Analysis 627Unit 6 Cities and Urban Land-Use Patterns and%u00a0Processes 632Module 44 The Origin and Influences of Urbanization 635The Origin and Spread of Cities 635Processes That Influence Patterns of Urbanization 640Module 44 Review 644AP%u00ae Exam Practice Questions 645Module 45 Cities Across the World 647Variations in Population Data Around the World 647The World Urbanization Pattern 650New Urban Land Uses and Their Challenges 652%u00a9 Bedford, Freeman & Worth Publishers. For review purposes only. Do not distribute.