senior teacher explaining molecular formulas
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Stockphotos.ro (c) 2025. All stock photos are provided by Dreamstime and are copyrighted by their respective owners.
senior teacher explaining molecular formulas |
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| navigate by keyword : 60s active adult age aged alone american board book books boomer boomers bright camera casual caucasian chemistry class classroom coat color contact day drawing education elderly elementary european explaining eye face female formula good gray hair health healthy holding indoors lab lecture lecturer lifestyle looking mature molecular molecule mood old older one only people person photo portrait room satisfied school science senior single sixties smile smiling smock standing stockphoto structure teacher teaching white whiteboard woman work working |
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| Senior teaching chemistry in school, explaining molecular formulas on whiteboard. |
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Stockphotos.ro (c) 2025. All stock photos are provided by Dreamstime and are copyrighted by their respective owners. |
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