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    Teacher explaining formula at blackboard in school — Stock Photo
    Teacher explaining formula at blackboard in school
    Man in spacesuit standing near red wall of industrial facility on sunny day — Stock Photo
    Man in spacesuit standing near red wall of industrial facility on sunny day
    Blur view of office buildings — Stock Photo
    Blur view of office buildings
    Cheerful father wearing ski helmet and warm sportswear standing in sunny outdoor sports club and looking at camera with smile — Stock Photo
    Cheerful father wearing ski helmet and warm sportswear standing in sunny outdoor sports club and looking at camera with smile
    Toddler boy playing with large straw hat. — Stock Photo
    Toddler boy playing with large straw hat.
    Female hand using tape for measuring circumference of baby girl head. — Stock Photo
    Female hand using tape for measuring circumference of baby girl head.
    Close-up of engineer doing a level check on the wall at construction site — Stock Photo
    Close-up of engineer doing a level check on the wall at construction site
    Adipose tissue composed of adipocytes — Stock Photo
    Adipose tissue composed of adipocytes
    Student in wheelchair studying furnace electronic control system in HVAC classroom — Stock Photo
    Student in wheelchair studying furnace electronic control system in HVAC classroom
    Engineer doing at level check on the wall at construction site — Stock Photo
    Engineer doing at level check on the wall at construction site
    Hispanic carpenter marking a measurement on a board at a house under construction — Stock Photo
    Hispanic carpenter marking a measurement on a board at a house under construction
    Cropped view of worker at construction site platform. — Stock Photo
    Cropped view of worker at construction site platform.
    Portrait of young woman in hat sit alone in cafe — Stock Photo
    Portrait of young woman in hat sit alone in cafe
    Little boy blowing out candle on his birthday cake at table with dad — Stock Photo
    Little boy blowing out candle on his birthday cake at table with dad
    Male foreman and engineer working at laptop with blueprints in factory — Stock Photo
    Male foreman and engineer working at laptop with blueprints in factory
    Pregnant woman and 6 week embryo — Stock Photo
    Pregnant woman and 6 week embryo
    Colored scanning electron micrograph of sectioned seminiferous tubule, site of sperm production in human testes. — Stock Photo
    Colored scanning electron micrograph of sectioned seminiferous tubule, site of sperm production in human testes.
    Women discussing over documents in carpenter workshop — Stock Photo
    Women discussing over documents in carpenter workshop
    Cannabis plants growing in greenhouse, medicine and legal grow concept. — Stock Photo
    Cannabis plants growing in greenhouse, medicine and legal grow concept.
    Portrait of a young Caucasian female fashion student smiling to camera while working on a design in a studio at fashion college — Stock Photo
    Portrait of a young Caucasian female fashion student smiling to camera while working on a design in a studio at fashion college
    Wooden footbridge in Japanese Garden, Portland, Oregon, United States — Stock Photo
    Wooden footbridge in Japanese Garden, Portland, Oregon, United States
    Human fetus at week 7, realistic digital illustration. — Stock Photo
    Human fetus at week 7, realistic digital illustration.
    Full body man in spacesuit standing on rocky ground against striped rocket shaped antennas on sunny day — Stock Photo
    Full body man in spacesuit standing on rocky ground against striped rocket shaped antennas on sunny day
    Human fetus at week 23, computer illustration. — Stock Photo
    Human fetus at week 23, computer illustration.
    Drug research and clinical testing — Stock Photo
    Drug research and clinical testing
    Exterior of building placed in residential district in city under blue sky in daytime — Stock Photo
    Exterior of building placed in residential district in city under blue sky in daytime
    Molecule of thyroxine T4 hormone produced by thyroid gland, digital illustration. — Stock Photo
    Molecule of thyroxine T4 hormone produced by thyroid gland, digital illustration.
    Human fetus developing at week 36, computer illustration. — Stock Photo
    Human fetus developing at week 36, computer illustration.
    Underwater shot of little boy diving in deep blue pool in sunny day. — Stock Photo
    Underwater shot of little boy diving in deep blue pool in sunny day.
    Illustration of silhouette of pregnant woman and 40 week foetus. — Stock Photo
    Illustration of silhouette of pregnant woman and 40 week foetus.
    Sprouting beans in petri dishes on white background. — Stock Photo
    Sprouting beans in petri dishes on white background.
    Side view of little talented girl drawing painting sitting at easel against window at home — Stock Photo
    Side view of little talented girl drawing painting sitting at easel against window at home
    Marsh marigold carpel — Stock Photo
    Marsh marigold carpel
    Human fetus developing at week 25, computer illustration. — Stock Photo
    Human fetus developing at week 25, computer illustration.
    Animal cell during mitosis nuclear division, digital illustration. — Stock Photo
    Animal cell during mitosis nuclear division, digital illustration.
    Schoolkids studying in the classroom at school — Stock Photo
    Schoolkids studying in the classroom at school
    Brother helping sister with measuring her height with ruler and pencil near wall — Stock Photo
    Brother helping sister with measuring her height with ruler and pencil near wall
    Focused male architect viewing digital blueprint on computer — Stock Photo
    Focused male architect viewing digital blueprint on computer
    Dockland Development during daytime — Stock Photo
    Dockland Development during daytime
    Student in wheelchair setting up HVAC experiment talking to another student — Stock Photo
    Student in wheelchair setting up HVAC experiment talking to another student
    Carpenter standing on joist of roof under construction — Stock Photo
    Carpenter standing on joist of roof under construction
    Portrait of a mixed race male baseball player, wearing a team uniform and a cap, standing on a baseball field, looking at a camera — Stock Photo
    Portrait of a mixed race male baseball player, wearing a team uniform and a cap, standing on a baseball field, looking at a camera
    Sperm in a fallopian tube. Coloured composition scanning electron micrograph (SEM) of human sperm travelling through a fallopian tube (oviduct) of a female — Stock Photo
    Sperm in a fallopian tube. Coloured composition scanning electron micrograph (SEM) of human sperm travelling through a fallopian tube (oviduct) of a female
    Preschooler boy undergoing logic test with numbers for developmental psychology test in female psychologist office. — Stock Photo
    Preschooler boy undergoing logic test with numbers for developmental psychology test in female psychologist office.
    Carpenters lifting a laminated beam at a construction site — Stock Photo
    Carpenters lifting a laminated beam at a construction site
    Cute girl with doll — Stock Photo
    Cute girl with doll
    Female scientist with test tubes researching coronavirus vaccine — Stock Photo
    Female scientist with test tubes researching coronavirus vaccine
    Teenage girl experimenting chemical solution in laboratory — Stock Photo
    Teenage girl experimenting chemical solution in laboratory
    Computerized production line with box in factory. — Stock Photo
    Computerized production line with box in factory.
    Toddler using a tablet computer — Stock Photo
    Toddler using a tablet computer
    Multi ethnic group of elementary school children sitting at desks wearing face masks in classroom. Primary education social distancing health safety during Covid19 Coronavirus pandemic. — Stock Photo
    Multi ethnic group of elementary school children sitting at desks wearing face masks in classroom. Primary education social distancing health safety during Covid19 Coronavirus pandemic.
    Construction workers framing inside of house — Stock Photo
    Construction workers framing inside of house
    Architect showing drawings to colleagues in meeting — Stock Photo
    Architect showing drawings to colleagues in meeting
    Exterior of modern building at night — Stock Photo
    Exterior of modern building at night
    Authentic Buddhist temple located against modern multistory residential buildings in contemporary urban city in evening sun — Stock Photo
    Authentic Buddhist temple located against modern multistory residential buildings in contemporary urban city in evening sun
    Shot taken from high viewpoint of modern and developing city in desk time with glowing lights, Canada — Stock Photo
    Shot taken from high viewpoint of modern and developing city in desk time with glowing lights, Canada
    Aerial view of street and office buildings in business district at night — Stock Photo
    Aerial view of street and office buildings in business district at night
    Illustration of human foetus on week 5 on black background. — Stock Photo
    Illustration of human foetus on week 5 on black background.
    Carpenter assembling roof structure for house construction — Stock Photo
    Carpenter assembling roof structure for house construction
    Schoolkids looking at each other in school campus on a sunny day — Stock Photo
    Schoolkids looking at each other in school campus on a sunny day