Mervin D. BettisMervin D. Bettis is professor emeritus at the Department of Agriculture, Northwest Missouri State University Maryville, Missouri. Revision Project Lead T. J. Brown is an instructor at South Central College. His coursework includes agribusiness, weding, facility maintenance, workplace environment layout & planning, and mechatronics. He started his teaching career at Springfield High School in Minnesota delivering both agricultural education and industrial technology courses for twelve years. Revision Writing Team Alison Almos- Anoka Hennepin Schools Luke Becker-Braham High School Bob Bonin-Fairmont High School T.J. Brown-South Central College Tim Hahn-Elk River Schools Ashley Johnson-Hinckley Finlayson High School Dean Joslin-Anoka Hennepin Schools Mark Lockhart-New Prague High School Hannah Reisdorf-Moorhead High School Timm Smith-Foley High School Tom Spehn-NE Metro 916 Read More Read Less