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    Schoolgirl writing in book — Stock Photo
    Schoolgirl writing in book
    Illustration of cervical spine in human skeleton on white background. — Stock Photo
    Illustration of cervical spine in human skeleton on white background.
    Rural teacher and pupils in outdoor learning — Stock Photo
    Rural teacher and pupils in outdoor learning
    Teacher teaching students — Stock Photo
    Teacher teaching students
    Schoolgirls in class playing with blocks — Stock Photo
    Schoolgirls in class playing with blocks
    Smiling active senior man stretching arms overhead in exercise class — Stock Photo
    Smiling active senior man stretching arms overhead in exercise class
    Man in protective mask with handmade wooden nesting box communicating with group of children volunteers gathering together in summer park — Stock Photo
    Man in protective mask with handmade wooden nesting box communicating with group of children volunteers gathering together in summer park
    Illustration of senior woman blue silhouette with highlighted kidneys on white background. — Stock Photo
    Illustration of senior woman blue silhouette with highlighted kidneys on white background.
    Portrait confident teenage girl in high school corridor — Stock Photo
    Portrait confident teenage girl in high school corridor
    Junior high students talking — Stock Photo
    Junior high students talking
    Attentive university students doing a experiment in laboratory — Stock Photo
    Attentive university students doing a experiment in laboratory
    Abstract male silhouette with visible human skull, computer illustration. — Stock Photo
    Abstract male silhouette with visible human skull, computer illustration.
    Side view close up of a multi-ethnic group of teenage male and female choristers holding sheet music and singing standing on the stage of a school theatre during rehearsals for a performance — Stock Photo
    Side view close up of a multi-ethnic group of teenage male and female choristers holding sheet music and singing standing on the stage of a school theatre during rehearsals for a performance
    Illustration of female silhouette with painful heart. — Stock Photo
    Illustration of female silhouette with painful heart.
    High angle view of a multi-ethnic group of teenage school pupils sitting and standing around a table in a classroom using laptop and tablet computers together at break time looking up to camera and smiling — Stock Photo
    High angle view of a multi-ethnic group of teenage school pupils sitting and standing around a table in a classroom using laptop and tablet computers together at break time looking up to camera and smiling
    Girl reading a book in book store — Stock Photo
    Girl reading a book in book store
    Abstract male figure showing colored gallbladder, computer illustration. — Stock Photo
    Abstract male figure showing colored gallbladder, computer illustration.
    Closeup cropped man turning pegs and tuning guitar during rehearsal in home studio — Stock Photo
    Closeup cropped man turning pegs and tuning guitar during rehearsal in home studio
    Transparent human silhouette with colored larynx, computer illustration. — Stock Photo
    Transparent human silhouette with colored larynx, computer illustration.
    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.
    Mature woman with laptop browsing smartphone and looking away while sitting in armchair and working on remote project at home — Stock Photo
    Mature woman with laptop browsing smartphone and looking away while sitting in armchair and working on remote project at home
    Portrait of teenage Caucasian female high school student with long blonde hair wearing a cap and gown, holding a diploma and looking to camera and smiling on her graduation day — Stock Photo
    Portrait of teenage Caucasian female high school student with long blonde hair wearing a cap and gown, holding a diploma and looking to camera and smiling on her graduation day
    Transparent male silhouette with colored kidneys, computer illustration. — Stock Photo
    Transparent male silhouette with colored kidneys, computer illustration.
    Male anatomy showing Deltoid muscle, computer illustration. — Stock Photo
    Male anatomy showing Deltoid muscle, computer illustration.
    Chinese college students sitting on steps of university building — Stock Photo
    Chinese college students sitting on steps of university building
    Front view close up of a two young African schoolgirls writing in their notebooks during a lesson in a township elementary school classroom, in the background their classmates are also writing in their books — Stock Photo
    Front view close up of a two young African schoolgirls writing in their notebooks during a lesson in a township elementary school classroom, in the background their classmates are also writing in their books
    Stylish guitarist on couch in living room — Stock Photo
    Stylish guitarist on couch in living room
    Black colleagues examining denture in laboratory — Stock Photo
    Black colleagues examining denture in laboratory
    Side view of male student with workbooks looking away with thoughtful face while standing near modern university building on street during studies — Stock Photo
    Side view of male student with workbooks looking away with thoughtful face while standing near modern university building on street during studies
    3d rendered illustration of human heart. — Stock Photo
    3d rendered illustration of human heart.
    Male conductor leading women choir with sheet music singing in music recording studio — Stock Photo
    Male conductor leading women choir with sheet music singing in music recording studio
    Nerves of human hand, computer illustration. — Stock Photo
    Nerves of human hand, computer illustration.
    Side view close up of two Caucasian teenage girls with long dark hair sitting in front of a window playing a flute and a ukulele — Stock Photo
    Side view close up of two Caucasian teenage girls with long dark hair sitting in front of a window playing a flute and a ukulele
    Friends discussing on steps — Stock Photo
    Friends discussing on steps
    High school students taking exam at desks in classroom — Stock Photo
    High school students taking exam at desks in classroom
    Human heart with colored right atrium, computer illustration. — Stock Photo
    Human heart with colored right atrium, computer illustration.
    College students using computer in library — Stock Photo
    College students using computer in library
    Women sitting in park — Stock Photo
    Women sitting in park
    Male artists sketching on floor in art class studio — Stock Photo
    Male artists sketching on floor in art class studio
    Back view of Anonymous African American female student with backpack standing on walkway near modern university building on street — Stock Photo
    Back view of Anonymous African American female student with backpack standing on walkway near modern university building on street
    Illustration of liver in male body silhouette. — Stock Photo
    Illustration of liver in male body silhouette.
    Young girl learning sister to play guitar on sofa at home — Stock Photo
    Young girl learning sister to play guitar on sofa at home
    Close-up illustration of larynx in male body silhouette. — Stock Photo
    Close-up illustration of larynx in male body silhouette.
    Illustration of back bones in human skeleton on blue background. — Stock Photo
    Illustration of back bones in human skeleton on blue background.
    Calm male student with workbooks looking away with thoughtful face while standing near modern university building on street during studies — Stock Photo
    Calm male student with workbooks looking away with thoughtful face while standing near modern university building on street during studies
    Focused teenage boy with clipboard vlogging — Stock Photo
    Focused teenage boy with clipboard vlogging
    Illustration of human organs in body silhouette. — Stock Photo
    Illustration of human organs in body silhouette.
    3d illustration of a mitochondrion within a cell. Mitochondria are organelles found in the cytoplasm of eukaryotic cells. They oxidase sugars and fats to produce energy — Stock Photo
    3d illustration of a mitochondrion within a cell. Mitochondria are organelles found in the cytoplasm of eukaryotic cells. They oxidase sugars and fats to produce energy
    Illustration of painful clavicle in human skeleton. — Stock Photo
    Illustration of painful clavicle in human skeleton.
    Abstract female silhouette with visible brain and spinal cord of nervous system, computer illustration. — Stock Photo
    Abstract female silhouette with visible brain and spinal cord of nervous system, computer illustration.
    Boy sitting at a desk — Stock Photo
    Boy sitting at a desk
    Group of children climbing up the ropes. — Stock Photo
    Group of children climbing up the ropes.
    Young women friends in hijabs talking outside sunny building — Stock Photo
    Young women friends in hijabs talking outside sunny building
    Diseased bladder in abstract human body, conceptual digital illustration. — Stock Photo
    Diseased bladder in abstract human body, conceptual digital illustration.
    Illustration of senior woman silhouette with colored adrenal glands on black background. — Stock Photo
    Illustration of senior woman silhouette with colored adrenal glands on black background.
    Friends at table in cafe — Stock Photo
    Friends at table in cafe
    Illustration of female silhouette with painful larynx. — Stock Photo
    Illustration of female silhouette with painful larynx.
    Focused young Latin American female student taking notes in planner while working on laptop preparing for university exam in cozy cafe — Stock Photo
    Focused young Latin American female student taking notes in planner while working on laptop preparing for university exam in cozy cafe
    Woman sitting on bed and reading book — Stock Photo
    Woman sitting on bed and reading book
    Chinese students with laptop and coffee in cafe — Stock Photo
    Chinese students with laptop and coffee in cafe