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    Hand fan on two-toned blue background — Stock Photo
    Hand fan on two-toned blue background
    Junior high students using computers in computer lab — Stock Photo
    Junior high students using computers in computer lab
    High school students taking exam at tables — Stock Photo
    High school students taking exam at tables
    Woman harvests carrots from her garden — Stock Photo
    Woman harvests carrots from her garden
    Community college instructor helping mature student in classroom — Stock Photo
    Community college instructor helping mature student in classroom
    Mature male community college student adjusting headphones at computer in classroom — Stock Photo
    Mature male community college student adjusting headphones at computer in classroom
    Focused high school boy student taking exam at desk in classroom — Stock Photo
    Focused high school boy student taking exam at desk in classroom
    Pestles and mortars in rows, pharmacy pattern on violet background. — Stock Photo
    Pestles and mortars in rows, pharmacy pattern on violet background.
    Attentive high school students listening in classroom — Stock Photo
    Attentive high school students listening in classroom
    Female high school teacher helping girl student doing homework in classroom — Stock Photo
    Female high school teacher helping girl student doing homework in classroom
    Overhead view high school students taking exam at desks in classroom — Stock Photo
    Overhead view high school students taking exam at desks in classroom
    Safety of drinking water. Conceptual illustration showing Pentatrichomonas hominis parasites in drop of water from tap. — Stock Photo
    Safety of drinking water. Conceptual illustration showing Pentatrichomonas hominis parasites in drop of water from tap.
    Seedlings growing in laboratory, conceptual image of plant research and genetic engineering. — Stock Photo
    Seedlings growing in laboratory, conceptual image of plant research and genetic engineering.
    Chalk hand drawn brain with assorted food, food for brain health and good memory — Stock Photo
    Chalk hand drawn brain with assorted food, food for brain health and good memory
    Sugar in a wooden bowl and spilled on a wooden background with the word 'sugar' — Stock Photo
    Sugar in a wooden bowl and spilled on a wooden background with the word 'sugar'
    Golden Bitcoins scattered on golden surface — Stock Photo
    Golden Bitcoins scattered on golden surface
    Focused high school students taking exam at desks in classroom — Stock Photo
    Focused high school students taking exam at desks in classroom
    Man collecting data butterflies — Stock Photo
    Man collecting data butterflies
    Businesswoman with headset working at computer behind adhesive notes — Stock Photo
    Businesswoman with headset working at computer behind adhesive notes
    Happy mother and daughter wearing angel wings — Stock Photo
    Happy mother and daughter wearing angel wings
    Ringed planet in front of shiny starscape — Stock Photo
    Ringed planet in front of shiny starscape
    Seedlings growing in stacked petri dishes, conceptual image of plant research and genetic engineering. — Stock Photo
    Seedlings growing in stacked petri dishes, conceptual image of plant research and genetic engineering.
    Focused female designer working at computer in office — Stock Photo
    Focused female designer working at computer in office
    Woman in blue boots with flowers and pink laces in studio on pink background — Stock Photo
    Woman in blue boots with flowers and pink laces in studio on pink background
    Brown beans in plastic cup for agriculture research, conceptual image. — Stock Photo
    Brown beans in plastic cup for agriculture research, conceptual image.
    Focused, curious male architect examining model in office — Stock Photo
    Focused, curious male architect examining model in office
    Man with fire extinguishers — Stock Photo
    Man with fire extinguishers
    Full frame green recyclable coffee cup among disposable cups — Stock Photo
    Full frame green recyclable coffee cup among disposable cups
    Hourglass in hands of scientist, conceptual image of passing time. — Stock Photo
    Hourglass in hands of scientist, conceptual image of passing time.
    Businesswoman with headphones working at computer in office — Stock Photo
    Businesswoman with headphones working at computer in office
    Focused young female field hockey players practicing sports drill on field — Stock Photo
    Focused young female field hockey players practicing sports drill on field
    Focused businesswoman using laptop in conference room — Stock Photo
    Focused businesswoman using laptop in conference room
    Objects placed on wooden surface — Stock Photo
    Objects placed on wooden surface
    Mule Deer Near Maligne Lake — Stock Photo
    Mule Deer Near Maligne Lake
    Anatomical model of human brain on pink background — Stock Photo
    Anatomical model of human brain on pink background
    Toilet microbes in water closet, conceptual digital illustration. — Stock Photo
    Toilet microbes in water closet, conceptual digital illustration.
    High school girl student doing homework at table in classroom — Stock Photo
    High school girl student doing homework at table in classroom
    Toilet seat microbes, conceptual digital illustration. — Stock Photo
    Toilet seat microbes, conceptual digital illustration.
    Focused high school boy student taking exam at desk in classroom — Stock Photo
    Focused high school boy student taking exam at desk in classroom
    Focused female engineer with screwdriver fixing robotic arm — Stock Photo
    Focused female engineer with screwdriver fixing robotic arm
    Crop anonymous woman holding brown egg in front of red chicken on white background — Stock Photo
    Crop anonymous woman holding brown egg in front of red chicken on white background
    Saturn and Enceladus as seen from moon — Stock Photo
    Saturn and Enceladus as seen from moon
    Focused junior high boy student using computer in computer lab — Stock Photo
    Focused junior high boy student using computer in computer lab
    Seedlings growing in laboratory glassware, conceptual image of plant research and genetic engineering. — Stock Photo
    Seedlings growing in laboratory glassware, conceptual image of plant research and genetic engineering.
    Dedicated female community college student using computer in computer lab classroom — Stock Photo
    Dedicated female community college student using computer in computer lab classroom
    Focused high school girl student taking exam at desk in classroom — Stock Photo
    Focused high school girl student taking exam at desk in classroom
    Laptop computer with vibrant sceen standing on a table, low key blue light image. Concept of working at home, blue light, minimalistic work desk — Stock Photo
    Laptop computer with vibrant sceen standing on a table, low key blue light image. Concept of working at home, blue light, minimalistic work desk
    Conceptual digital illustration showing Pentatrichomonas hominis parasites in drop of water from dirty tap. — Stock Photo
    Conceptual digital illustration showing Pentatrichomonas hominis parasites in drop of water from dirty tap.
    Translucent bubbles on blue background — Stock Photo
    Translucent bubbles on blue background
    High school teacher supervising students taking exam desks classroom — Stock Photo
    High school teacher supervising students taking exam desks classroom
    Creative businesswomen working at conference table — Stock Photo
    Creative businesswomen working at conference table
    Girl in angel wings posing for photographers during photo shoot in studio — Stock Photo
    Girl in angel wings posing for photographers during photo shoot in studio
    Delicious appetizer on white plate — Stock Photo
    Delicious appetizer on white plate
    Grandson holding his grandmother's hand — Stock Photo
    Grandson holding his grandmother's hand
    Mountaineering boots with crampons attached in mountainous landscape — Stock Photo
    Mountaineering boots with crampons attached in mountainous landscape
    Grains and pulses in plastic cups for agriculture research, conceptual image. — Stock Photo
    Grains and pulses in plastic cups for agriculture research, conceptual image.
    Close-up of male hands holding soil in garden — Stock Photo
    Close-up of male hands holding soil in garden
    Scientist holding petri dish with artificial meat, conceptual image of cultured meat grown in laboratory. — Stock Photo
    Scientist holding petri dish with artificial meat, conceptual image of cultured meat grown in laboratory.
    Focused female field hockey player practicing — Stock Photo
    Focused female field hockey player practicing
    Focused young female field hockey player playing on field at night — Stock Photo
    Focused young female field hockey player playing on field at night