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Geoblox Environmental Degradation Block Models

Item Number:  (470222-828)
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Geoblox Environmental Degradation Block Models

Item Number:  (470222-814)
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The Sixth Extinction: The Human Role DVD

Item Number:  (470138-350)
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The Sixth Extinction: The Human Role DVD

Item Number:  (470030-912)
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Plundering the Oceans DVD

Item Number:  (470030-928)
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The Once Good Earth: Understanding Soil DVD

Item Number:  (470138-362)
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Renewable Fuels DVD, 24 min.

Item Number:  (470138-356)
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Global Resources: Management & Competition DVD

Item Number:  (470138-342)
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The Once Good Earth: Understanding Soil DVD

Item Number:  (470030-886)
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Dirty Little Secrets: The Impact of Fine Particle Pollution DVD

Item Number:  (470030-918)
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Biomes of the Earth: Core Concepts DVD

Item Number:  (470138-352)
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Marine (Saltwater) Inocoulum

Item Number:  (470177-394)
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Effect of Salinity on Seawater kit

Item Number:  (470220-216)
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Effect of Salinity on Seawater kit, Includes: Phenolphthalein Indicator, 1M Potassium Chromate, 0.1M Silver Nitrate, 3M Sodium Hydroxide, Synthetic Atlantic Ocean Water, Gulf of Mexico Water and Pacific Ocean Water, has enough materials for 15 groups

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History shows that rivers are essential to building thriving communities, but who does a river really belong to? The Ottaway describes the life and livelihood a river provides to both human and natural communities through the perspectives of all who depend on it. Explore the struggle for balance a

Item Number:  (470330-870)
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Wild mustangs have long been an icon of native peoples and early settlers of North America. Yet their fate today is uncertain. Traded, stolen and wild for 400 years, an estimated 2-3 million roamed North America in 1890 until they became almost excinct. The US Government has attempted to control t

Item Number:  (470330-834)
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Are trees plants? Are they worth more as lumbar or as living things? Hosts, Josh and Caroline, help you discover the variety of benefits that plants offer to help you make your own value-based decision about the role trees and plants play in our lives. The science sleuths investigate how plants can

Item Number:  (470330-894)
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