| #2 |  OIL SPILL!
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| #3 |  Bugs Are Insects Bugs Are Insects
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| #4 |  The Big Dipper
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| #5 |  How do birds find their way?
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| #6 |  Snow Is Falling PB Snow Is Falling PB
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| #7 |  Zipping, zapping, zooming bats
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| #8 |  From Caterpillar to Butterfly
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| #9 |  From Tadpole to Frog From Tadpole to Frog
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| #10 |  Where Are the Night Animals?
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| #11 |  Down comes the rain
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| #12 |  The planets in our solar system
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| #13 |  What Is the World Made Of?: All About Solids, Liquids, and Gases
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| #14 |  What lives in a shell?
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| #15 |  A Nest Full of Eggs A Nest Full of Eggs
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| #16 |  Animals in Winter
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| #17 |  A tree is a plant
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| #18 |  Hear Your Heart
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| #19 |  Milk Milk: From Cow to Carton
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| #20 |  Light Is All Around Us
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| #21 | My Visit to the Dinosaurs Book and Tape My Visit to the Dinosaurs Book and Tape |
| #22 |  what makes day and night
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| #23 |  How many teeth?
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| #24 |  Clouds Clouds
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| #25 |  Where Do Chicks Come From?
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| #26 |  How people learned to fly
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| #27 |  In the rainforest
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| #28 |  From Seed to Pumpkin
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| #29 | Archaeologists Dig for Clues.jpg Archaeologists Dig for Clues.jpg
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| #30 |  Why do leaves change color?
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| #31 |  How do apples grow?
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| #32 |  Sunshine Makes the Seasons
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| #33 | Earthquakes Earthquakes
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| #34 |  Floating in space
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| #35 |  Our puppies are growing
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