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    Schoolboy putting leaves on microscope slide in school laboratory. — Stock Photo
    Schoolboy putting leaves on microscope slide in school laboratory.
    Illustration of fatty heart on white background. — Stock Photo
    Illustration of fatty heart on white background.
    Family bonding over a book reading session at home — Stock Photo
    Family bonding over a book reading session at home
    Portrait of a young girl wearing make-up standing by a curtain — Stock Photo
    Portrait of a young girl wearing make-up standing by a curtain
    Abstract male silhouette with visible upper skeletal body, computer illustration. — Stock Photo
    Abstract male silhouette with visible upper skeletal body, computer illustration.
    Girls and boys with wind turbine models. — Stock Photo
    Girls and boys with wind turbine models.
    Young college student using digital tablet in library — Stock Photo
    Young college student using digital tablet in library
    Male teacher leading lesson at projection screen in classroom — Stock Photo
    Male teacher leading lesson at projection screen in classroom
    Teacher assisting students in experiment on molecule in laboratory — Stock Photo
    Teacher assisting students in experiment on molecule in laboratory
    Global communications screen saver on computer in computer lab — Stock Photo
    Global communications screen saver on computer in computer lab
    Group of multi ethnic kids sitting on their desk during the lesson with a female teacher wearing a face mask. Primary education social distancing health safety during Covid19 Coronavirus pandemic. — Stock Photo
    Group of multi ethnic kids sitting on their desk during the lesson with a female teacher wearing a face mask. Primary education social distancing health safety during Covid19 Coronavirus pandemic.
    Smiling female with book on couch — Stock Photo
    Smiling female with book on couch
    Chef teacher and students using hand mixer in cooking class kitchen — Stock Photo
    Chef teacher and students using hand mixer in cooking class kitchen
    Rural female teacher and chinese pupils laughing in the classroom — Stock Photo
    Rural female teacher and chinese pupils laughing in the classroom
    Back view of unrecognizable positive young male students in casual clothes and true wireless earphones smiling while doing homework assignment together using laptops sitting at table — Stock Photo
    Back view of unrecognizable positive young male students in casual clothes and true wireless earphones smiling while doing homework assignment together using laptops sitting at table
    Smiling female college student walking in corridor — Stock Photo
    Smiling female college student walking in corridor
    Side view of a sad lonely bullied Caucasian isolated teenage boy sitting on the ground alone in a schoolyard reading — Stock Photo
    Side view of a sad lonely bullied Caucasian isolated teenage boy sitting on the ground alone in a schoolyard reading
    Illustration of human gallbladder in body silhouette. — Stock Photo
    Illustration of human gallbladder in body silhouette.
    Male student with female friends — Stock Photo
    Male student with female friends
    Illustration of colored larynx and thyroid in transparent human body. — Stock Photo
    Illustration of colored larynx and thyroid in transparent human body.
    Child sitting at piano — Stock Photo
    Child sitting at piano
    African american boy showing how to recycle plastic items to other students in class at school. school and education concept — Stock Photo
    African american boy showing how to recycle plastic items to other students in class at school. school and education concept
    Female community college student with headphones using computer in computer lab classroom — Stock Photo
    Female community college student with headphones using computer in computer lab classroom
    Two children using a laptop computer — Stock Photo
    Two children using a laptop computer
    Beautiful woman and cute child lying on comfortable bed and coloring pictures in notebook together — Stock Photo
    Beautiful woman and cute child lying on comfortable bed and coloring pictures in notebook together
    Female musculature in transparent silhouette, front view, computer illustration — Stock Photo
    Female musculature in transparent silhouette, front view, computer illustration
    Mother and daughter doing homework at dining table — Stock Photo
    Mother and daughter doing homework at dining table
    Group of diverse students raising their hands in the class at elementary school. school and education concept — Stock Photo
    Group of diverse students raising their hands in the class at elementary school. school and education concept
    Smiling, confident teenage girl in dance class studio — Stock Photo
    Smiling, confident teenage girl in dance class studio
    Teenager Sitting on Floor and Working On A Laptop — Stock Photo
    Teenager Sitting on Floor and Working On A Laptop
    Little kid standing at blackboard — Stock Photo
    Little kid standing at blackboard
    Young man using digital tablet in library — Stock Photo
    Young man using digital tablet in library
    Illustration of cervical spine in human skeleton. — Stock Photo
    Illustration of cervical spine in human skeleton.
    Morning assembly of school students — Stock Photo
    Morning assembly of school students
    Smiling woman in hijab listening in audience — Stock Photo
    Smiling woman in hijab listening in audience
    Front view mid section of female fashion student working on a design in a studio at fashion college — Stock Photo
    Front view mid section of female fashion student working on a design in a studio at fashion college
    Man surrounded by information overload — Stock Photo
    Man surrounded by information overload
    Realistic body model showing female anatomy of muscles, mammary glands and blood vessels, computer illustration. — Stock Photo
    Realistic body model showing female anatomy of muscles, mammary glands and blood vessels, computer illustration.
    Portrait of a school boy against wall in school — Stock Photo
    Portrait of a school boy against wall in school
    Man assisting little son in using laptop on sofa at home — Stock Photo
    Man assisting little son in using laptop on sofa at home
    Rear view of male student studying — Stock Photo
    Rear view of male student studying
    Rear view of caucasian male teacher teaching group of diverse students in the class at school. school and education concept — Stock Photo
    Rear view of caucasian male teacher teaching group of diverse students in the class at school. school and education concept
    Happy female freelancer with netbook in red case standing in city street and looking away — Stock Photo
    Happy female freelancer with netbook in red case standing in city street and looking away
    Chinese children looking at exhibition in museum — Stock Photo
    Chinese children looking at exhibition in museum
    Adorable kid boy relaxing and resting after sleeping in his white bed in colorful pajama with stripes. Indoor. — Stock Photo
    Adorable kid boy relaxing and resting after sleeping in his white bed in colorful pajama with stripes. Indoor.
    Close-up of watchful shepherd dog sitting in the farm — Stock Photo
    Close-up of watchful shepherd dog sitting in the farm
    Young man walking through a garden with trumpet flowers. — Stock Photo
    Young man walking through a garden with trumpet flowers.
    Composition of colorful notebooks, pencils and arranged on pink desk — Stock Photo
    Composition of colorful notebooks, pencils and arranged on pink desk
    Close-up illustration of thyroid gland in male body silhouette. — Stock Photo
    Close-up illustration of thyroid gland in male body silhouette.
    Woman using copy machine in library — Stock Photo
    Woman using copy machine in library
    Happy girl with mother walking to school — Stock Photo
    Happy girl with mother walking to school
    Students studying at desk in classroom — Stock Photo
    Students studying at desk in classroom
    Attentive university students doing a experiment in laboratory — Stock Photo
    Attentive university students doing a experiment in laboratory
    Primary school students in rural primary school — Stock Photo
    Primary school students in rural primary school
    Portrait happy, confident male community college instructor leading lesson in classroom — Stock Photo
    Portrait happy, confident male community college instructor leading lesson in classroom
    College students studying together at home — Stock Photo
    College students studying together at home
    Top view of various models of dental jaws with caries and missing teeth in white container used for training of dentistry students — Stock Photo
    Top view of various models of dental jaws with caries and missing teeth in white container used for training of dentistry students
    Classmates clapping for woman at microphone in journalism class — Stock Photo
    Classmates clapping for woman at microphone in journalism class
    College students using computers in computer lab — Stock Photo
    College students using computers in computer lab
    Front view of a multi-ethnic group of teenage school pupils and their Caucasian male teacher standing in a classroom looking at laptop computers together and smiling — Stock Photo
    Front view of a multi-ethnic group of teenage school pupils and their Caucasian male teacher standing in a classroom looking at laptop computers together and smiling