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    Underground Habitats
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    3.2   | 
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    Understanding Electricity (4 titles)
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    Un hábitat de bosque (A Forest Habitat)
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    3.5   | 
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    Un hábitat de bosque tropical (A Rainforest Habitat)
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    3.9   | 
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    Un hábitat de desierto (A Desert Habitat)
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    3.5   | 
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    Un hábitat de pantano (A Wetland Habitat)
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    3.6   | 
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    Un hábitat de pastizal (A Grassland Habitat)
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    3.9   | 
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    Un hábitat de sabana (A Savanna Habitat)
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    3.6   | 
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    Unusual Animal Journeys
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    5.9   | 
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    Velociraptor
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    Volcanoes
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    5.8   | 
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    Walruses
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    Warm-blooded or cold-blooded?
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    4.0   | 
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    Water
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    6.3   | 
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    Water Habitats
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    3.3   | 
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    Water, Water Everywhere
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    Waves and Information Transfer
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    We Read about Dolphins
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    We Read about Seahorses
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    We Read about the Amphibian Life Cycle
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    We Read about the Forest Biome
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    We Read about the Grassland Biome
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    We Read about the Mammal Life Cycle
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    Wetland Food Chains
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    5.5   | 
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