Empty green chalkboard with line, question mark and a piece of chalk

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Size: 5616px × 3744px
Photo credit: © Robert Kneschke / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: advertising, antique, background, black, blackboard, blank, chalk, chalkboard, copy, dirty, em, empty, grunge, lessons, line, mark, presentation, problem, question, retro, school, space, stroke, texture, uncertainty, vintage, wall