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    High school girl student doing homework at table in classroom — Stock Photo
    High school girl student doing homework at table in classroom
    France, Limousin, triticale field, hybrid of wheat and rye, near Aubusson. — Stock Photo
    France, Limousin, triticale field, hybrid of wheat and rye, near Aubusson.
    Central Asia, Kyrgyzstan, Issyk Kul Province (Ysyk-K?l), not far from Karakol, haystacks — Stock Photo
    Central Asia, Kyrgyzstan, Issyk Kul Province (Ysyk-K?l), not far from Karakol, haystacks
    High school girl students studying in classroom — Stock Photo
    High school girl students studying in classroom
    Girl student using microscope in classroom — Stock Photo
    Girl student using microscope in classroom
    France, Dordogne, plowed fields and forest. Pool of light — Stock Photo
    France, Dordogne, plowed fields and forest. Pool of light
    Smiling female science teacher and girl student reading textbook at microscope in laboratory classroom — Stock Photo
    Smiling female science teacher and girl student reading textbook at microscope in laboratory classroom
    High school students talking in classroom — Stock Photo
    High school students talking in classroom
    Boy student holding and examining molecular structure — Stock Photo
    Boy student holding and examining molecular structure
    High school students and teacher clapping for student in debate class — Stock Photo
    High school students and teacher clapping for student in debate class
    Female teacher and students examining DNA model in classroom — Stock Photo
    Female teacher and students examining DNA model in classroom
    Curious girl students conducting scientific experiment in laboratory classroom — Stock Photo
    Curious girl students conducting scientific experiment in laboratory classroom
    Boy students conducting scientific experiment, examining liquid in test tube in laboratory classroom — Stock Photo
    Boy students conducting scientific experiment, examining liquid in test tube in laboratory classroom
    Girl student holding molecular structure at microscope in laboratory classroom — Stock Photo
    Girl student holding molecular structure at microscope in laboratory classroom
    High school students talking during debate class in classroom — Stock Photo
    High school students talking during debate class in classroom
    Smiling girl conducting scientific experiment in laboratory classroom — Stock Photo
    Smiling girl conducting scientific experiment in laboratory classroom
    Students examining liquid in test tube, conducting scientific experiment in laboratory classroom — Stock Photo
    Students examining liquid in test tube, conducting scientific experiment in laboratory classroom
    Male teacher helping girl student using microscope, conducting scientific experiment in laboratory classroom — Stock Photo
    Male teacher helping girl student using microscope, conducting scientific experiment in laboratory classroom
    High school students talking and studying at table in classroom — Stock Photo
    High school students talking and studying at table in classroom
    High school boy student with backpack leaving classroom — Stock Photo
    High school boy student with backpack leaving classroom
    Smiling teacher leading lesson at projection screen in classroom — Stock Photo
    Smiling teacher leading lesson at projection screen in classroom
    Curious students examining liquid in beaker, conducting scientific experiment in laboratory classroom — Stock Photo
    Curious students examining liquid in beaker, conducting scientific experiment in laboratory classroom
    Sri Lanka. Mirissa, planting cinnamon. Cinnamon is the inner bark of the cinnamon tree. Artisanal preparation of cinnamon stick. — Stock Photo
    Sri Lanka. Mirissa, planting cinnamon. Cinnamon is the inner bark of the cinnamon tree. Artisanal preparation of cinnamon stick.
    Focused boy student reading textbook at microscope in laboratory classroom — Stock Photo
    Focused boy student reading textbook at microscope in laboratory classroom
    High school teacher leading geography lesson at projection screen in classroom — Stock Photo
    High school teacher leading geography lesson at projection screen in classroom
    Close up profile girl student using microscope, conducting scientific experiment — Stock Photo
    Close up profile girl student using microscope, conducting scientific experiment
    Surprised, curious students watching chemical reaction, conducting scientific experiment in laboratory classroom — Stock Photo
    Surprised, curious students watching chemical reaction, conducting scientific experiment in laboratory classroom
    Eager girl students raising arms behind microscopes in laboratory classroom — Stock Photo
    Eager girl students raising arms behind microscopes in laboratory classroom
    Surprised students conducting exploding foam scientific experiment in classroom laboratory — Stock Photo
    Surprised students conducting exploding foam scientific experiment in classroom laboratory
    France, Northern France, Pas de Calais, inland between Calais, Dunkerque and St-Omer. — Stock Photo
    France, Northern France, Pas de Calais, inland between Calais, Dunkerque and St-Omer.
    Closeup on lettuce grown on an above-ground tray. — Stock Photo
    Closeup on lettuce grown on an above-ground tray.
    France, Brittany, Morbihan. Aerial view. Harvest. — Stock Photo
    France, Brittany, Morbihan. Aerial view. Harvest.
    Female science teacher and girl student writing at whiteboard in classroom — Stock Photo
    Female science teacher and girl student writing at whiteboard in classroom
    Female teacher and girl students examining molecular structure in classroom — Stock Photo
    Female teacher and girl students examining molecular structure in classroom
    Smiling high school students listening in debate class — Stock Photo
    Smiling high school students listening in debate class
    High school girl students with hands raised during lesson in classroom — Stock Photo
    High school girl students with hands raised during lesson in classroom
    Girl students conducting chemistry experiment in classroom laboratory — Stock Photo
    Girl students conducting chemistry experiment in classroom laboratory
    High school students with hands raised during lesson in classroom — Stock Photo
    High school students with hands raised during lesson in classroom
    High school students clapping in debate class — Stock Photo
    High school students clapping in debate class
    Surprised students conducting scientific experiment, watching chemical reaction in classroom laboratory — Stock Photo
    Surprised students conducting scientific experiment, watching chemical reaction in classroom laboratory
    High school students with hands raised during lesson in classroom — Stock Photo
    High school students with hands raised during lesson in classroom
    High school teacher helping students studying in classroom — Stock Photo
    High school teacher helping students studying in classroom
    Smiling boy student assembling DNA model in classroom — Stock Photo
    Smiling boy student assembling DNA model in classroom
    France, Normandy, Montmartin-sur Mer, Haystacks mechanically rolled at the time of harvest. — Stock Photo
    France, Normandy, Montmartin-sur Mer, Haystacks mechanically rolled at the time of harvest.
    Pensive, curious girl student examining molecular structure — Stock Photo
    Pensive, curious girl student examining molecular structure
    Girl student examining DNA model in classroom — Stock Photo
    Girl student examining DNA model in classroom
    Pensive girl student conducting science experiment in classroom laboratory — Stock Photo
    Pensive girl student conducting science experiment in classroom laboratory
    France, central Southern France, The regional natural park of Haut-Languedoc, la Montagne Noire — Stock Photo
    France, central Southern France, The regional natural park of Haut-Languedoc, la Montagne Noire
    Smiling girl students examining liquid in test tube, conducting scientific experiment in laboratory classroom — Stock Photo
    Smiling girl students examining liquid in test tube, conducting scientific experiment in laboratory classroom
    High school teacher helping students with homework in classroom — Stock Photo
    High school teacher helping students with homework in classroom
    Female teacher and students conducting scientific experiment in laboratory classroom — Stock Photo
    Female teacher and students conducting scientific experiment in laboratory classroom
    Laughing girl student at microscope in laboratory classroom — Stock Photo
    Laughing girl student at microscope in laboratory classroom
    Portrait confidant high school girl student studying in classroom — Stock Photo
    Portrait confidant high school girl student studying in classroom
    Male teacher and boy student conducting scientific experiment in laboratory classroom — Stock Photo
    Male teacher and boy student conducting scientific experiment in laboratory classroom
    High school students clapping for classmate in debate class — Stock Photo
    High school students clapping for classmate in debate class
    Focused boy students using digital tablet and microscope, conducting scientific experiment in laboratory classroom — Stock Photo
    Focused boy students using digital tablet and microscope, conducting scientific experiment in laboratory classroom
    Smiling female chemistry teacher and students conducting scientific experiment in laboratory classroom — Stock Photo
    Smiling female chemistry teacher and students conducting scientific experiment in laboratory classroom
    Girl students conducting scientific experiment, examining liquid in beaker in laboratory classroom — Stock Photo
    Girl students conducting scientific experiment, examining liquid in beaker in laboratory classroom
    Girl student using microscope, conducting scientific experiment in laboratory classroom — Stock Photo
    Girl student using microscope, conducting scientific experiment in laboratory classroom
    Boy student examining DNA model in laboratory classroom — Stock Photo
    Boy student examining DNA model in laboratory classroom