Native Americans found a way to vent the smoke from their Tee-Pees by using: Chi

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Native Americans found a way to vent the smoke from their Tee-Pees by using: Chimneys Large fans Adjustable smoke flaps Underground pits Question 4 3 points Save Answer Why do we install expansion joints in concrete highways? So car tires will go bump-bump This is another example of jerry building Unions require them To accommodate thermal expansion Question 5 3 points Save Answer Why did the original Tacoma Narrows Bridge collapse in the 1940's? Vibration caused by the wind Jerry building Scamping It was overloaded Trick Question - it collapsed in the 1930's

Explanation / Answer

4) To accomodate thermal expansion

5) Vibration byw inds

7) Chimneys

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