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Pat notices that when thunder can be heard in the distance,her dog,Rudy hides under her desk,and she believes that the thunder causes Rudy to hide.She notices that Rudy does not hide in response to other loud noises,if,for example,she drops a cast iron pan in the kitchen.In experimental terms,Pat has observed ____.
Vikings
Norse explorers, warriors, merchants, and pirates from Scandinavia who raided, traded, explored, and settled in wide areas of Europe from the late 8th to early 11th centuries.
Ottonian Plaques
Decorative metalwork from the Ottonian dynasty of the Holy Roman Empire, recognized for their craftsmanship and religious themes.
Magdeburg
A city in central Germany, historically significant for its role in the Holy Roman Empire and during various military conflicts.
Engraving on Metal
The process of cutting or carving designs into a metal surface, often for printing or decorative purposes.
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