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Unknown
Provides information about ankylosaurus, a heavily armored but slow-moving, plant-eating dinosaur.
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Unknown
Provides information about apatosaurus, including what they ate, how they interacted with one another, and how they defended themselves.
![](/images/cover/.tmb/thumb_0836878523-L_100_200.jpg)
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Unknown
Examines different species of bats, highlighting the way that they use sound to navigate at night.
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