Why Walmart Pre-Owned?

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Walmart Pre-Owned allows you to find previously owned, well-cared-for items from Walmart’s trusted & performance-managed sellers. Shopping Pre-Owned allows you to bring home the best-quality picks at even lower prices, in addition to extending the life of an item & reducing waste. Find your favorites & shop a range of conditions in every category.

Each Pre-Owned item listed comes from Walmart’s trusted performance-managed sellers, to ensure you get quality items.

Save even more on top brands & your most-loved items.

Don’t love it? Most items offer a 30-day* free return policy, for added peace of mind.

Shopping Pre-Owned helps in extending the life of an item & reducing waste.

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Purchase multiple pairs of eyeglasses (frame & prescription lenses) to get 20% off each additional pair of glasses after your first order. Multiple qualifying glasses must be purchased during a single online transaction. Qualifying purchases include: a complete pair of prescription eyeglasses (frame & prescription lenses) or an insurance order for a complete pair of glasses. Insurance benefits should be maximized on the first order (if applicable).

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How Does Earth Work? Physical Geology and the Process of Science (Other)

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With its unconventional yet highly effective approach, How Does Earth Work? demonstrates the process of science as a vehicle for investigating physical geology. Smith and Pun connect readers to the evidence behind the facts, instead of reproducing known facts--sparking interest in how science is practiced and how we know what we know. Like geology detectives, readers learn to think through the scientific process and uncover evidence that explains Earth's mysteries. Chapters open with an essay that places a curious investigator in a realistic field or lab setting to observe and ask questions about geological phenomena. Integrated real-world connections link topics to issues of societal concern or relevant experience to increase appreciation of the value of discovering science; and annotated illustrations with thoughtful descriptions help readers observe the hypotheses presented. KEY TOPICS: Why Study Earth? Minerals: Building Blocks of the Planet; Rocks and Rock-Forming Processes; Formation of Magma and Igneous Rocks; Formation of Sediment and Sedimentary Rocks; Formation of Metamorphic Rocks; Earth Materials as Time Keepers; Journey to the Center of Earth; Making Earth; Motion Inside Earth; Deformation of Rocks; Global Tectonics: Plates and Plumes; Tectonics and Surface Relief; Soil Formation and Landscape Stability; Mass Movements: Landscapes in Motion; Streams: Flowing Water Shapes the Landscape; Water Flowing Underground; Glaciers: Cold-Climate Sculptors of Continents; Shorelines: Changing Landscapes Where Land Meets Sea; Wind: A Global Geologic Process; Global Warming: Real-time Change in the Earth System. MARKET An interesting reference for anyone interested in learning more about Earth's processes.

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With its unconventional yet highly effective approach, How Does Earth Work? demonstrates the process of science as a vehicle for investigating physical geology. Smith and Pun connect readers to the evidence behind the facts, instead of reproducing known facts--sparking interest in how science is practiced and how we know what we know. Like geology detectives, readers learn to think through the scientific process and uncover evidence that explains Earth's mysteries. Chapters open with an essay that places a curious investigator in a realistic field or lab setting to observe and ask questions about geological phenomena. Integrated real-world connections link topics to issues of societal concern or relevant experience to increase appreciation of the value of discovering science; and annotated illustrations with thoughtful descriptions help readers observe the hypotheses presented. KEY TOPICS: Why Study Earth? Minerals: Building Blocks of the Planet; Rocks and Rock-Forming Processes; Formation of Magma and Igneous Rocks; Formation of Sediment and Sedimentary Rocks; Formation of Metamorphic Rocks; Earth Materials as Time Keepers; Journey to the Center of Earth; Making Earth; Motion Inside Earth; Deformation of Rocks; Global Tectonics: Plates and Plumes; Tectonics and Surface Relief; Soil Formation and Landscape Stability; Mass Movements: Landscapes in Motion; Streams: Flowing Water Shapes the Landscape; Water Flowing Underground; Glaciers: Cold-Climate Sculptors of Continents; Shorelines: Changing Landscapes Where Land Meets Sea; Wind: A Global Geologic Process; Global Warming: Real-time Change in the Earth System. MARKET An interesting reference for anyone interested in learning more about Earth's processes.

How Does Earth Work? Physical Geology and the Process of Science (Other)

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The How Not to Die Cookbook: 100+ Recipes to Help Prevent and Reverse Disease (Spiral Bound)