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EnglishVoice Age
Young Adult (18-35)Accents
North American (General) North American (US Midwest- Chicago, Great Lakes) North American (US West Coast - California, Portland)Transcript
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Air Force textbook 2.7 Army Air Corps, 1926 to 1947 enlisted men participated in a range of experimental work including altitude flights, blind flying, aerial photography, cosmic ray research and the development of the parachute, whether they were selected or volunteered. Enlisted men were the first to try out new parachute designs and they eventually took over most of the testing and training. The most prominent enlisted parachutist was Sergeant Ralph Boreal who tested the first backpack style free fall parachute. 19 May 1919 boreal eventually became chief parachute instructor at Kelly Field Texas and earned the distinguished flying cross in 1933 for service as an experimental parachute tester. Compare and contrast. How are the agents of erosion alike and different swept away? Why did people build a house so close to the edge of a cliff? They didn't. The land has changed since the house was built, erosion destroyed, huge chunks of the hillside. Erosion is the moving of weathered rock and soil from one place to another. Weathering and erosion work hand in hand to shape earth's surface erosion by gravity. The cliff in the photo is eroding as the result of gravity. Gravity is a force that pulls all objects downward toward earth's center. Gravity is pulling the loose weathered rocks and soil down the slope.