biology teacher blackboard explaining nature science lesson school pedagogue man chalkboard |
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| navigate by keyword : classroom biology laboratory lesson lab school standing background cartoon class environment experiment interior plant poster room science scientific teacher man male teaching board black white chalk blackboard chalkboard student education college study illustration subject training learning flat holding professor vector people knowledge pointer pointing concept professional analysis person pupil pedagogue |
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| Biology teacher at blackboard explaining nature science lesson. School pedagogue man at chalkboard. Education, science and presentation on black chalk board concept. Cartoon flat vector illustration |
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