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Ralph G Roach
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9 Presentations
United States
Joined 09/01/2019
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Warm Up Solve each proportion. 1. 2. 3. 4.
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Identifying Differences Between Plants and Animals
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Providing Assistance to Homeless Persons at Train Stations
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Chem. 230 – 10/21 Lecture
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How HEAT puts Stress on your body
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Message Passing Interface (MPI) 3
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Hazardous Air Pollutants under the Clean Air Act
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Chapter 1- Introducing Psychology
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“Cyber-Bullying, Sexting , Social Networking and the Law”
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