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    Wind power turbines — Stock Photo
    Wind power turbines
    Front view of a young athletic Caucasian man exercising on a footbridge in a city, stretching with a leg on the handrail — Stock Photo
    Front view of a young athletic Caucasian man exercising on a footbridge in a city, stretching with a leg on the handrail
    Girls and boys in a classroom — Stock Photo
    Girls and boys in a classroom
    Reservoir dam in full spate in Wales. — Stock Photo
    Reservoir dam in full spate in Wales.
    African American teenage girl with closed eyes enjoying music in headphones in neon studio — Stock Photo
    African American teenage girl with closed eyes enjoying music in headphones in neon studio
    Close-up of solar panel on wooden table in office — Stock Photo
    Close-up of solar panel on wooden table in office
    Traditional windmills under grey sky, Kinderdisk, Netherlands — Stock Photo
    Traditional windmills under grey sky, Kinderdisk, Netherlands
    Cute little boys playing — Stock Photo
    Cute little boys playing
    Serious mature female in activewear in protective boxing head guard with towel in the hands standing on blue background and looking at camera — Stock Photo
    Serious mature female in activewear in protective boxing head guard with towel in the hands standing on blue background and looking at camera
    Engineer using a laptop at wind farm — Stock Photo
    Engineer using a laptop at wind farm
    Young strong African American sportsman in boxing hand wraps working out and looking at camera in building — Stock Photo
    Young strong African American sportsman in boxing hand wraps working out and looking at camera in building
    Car arrow with red and green cars, eco-friendly concept — Stock Photo
    Car arrow with red and green cars, eco-friendly concept
    Wind turbines at sunset, America, USA — Stock Photo
    Wind turbines at sunset, America, USA
    Rows of wind turbines, Eemshaven, Groningen, Netherlands — Stock Photo
    Rows of wind turbines, Eemshaven, Groningen, Netherlands
    Power engineer at solar photovoltaic array — Stock Photo
    Power engineer at solar photovoltaic array
    Mid section of male worker working on solar panels at solar station — Stock Photo
    Mid section of male worker working on solar panels at solar station
    Close-up of an old-fashioned windmill, United States — Stock Photo
    Close-up of an old-fashioned windmill, United States
    Low angle view of a wind turbine in motion — Stock Photo
    Low angle view of a wind turbine in motion
    Male worker using digital tablet at solar station on a sunny day — Stock Photo
    Male worker using digital tablet at solar station on a sunny day
    Girls and boys in Science Club — Stock Photo
    Girls and boys in Science Club
    Beautiful beach scenery with windmills at sunset, Xinjiang, China — Stock Photo
    Beautiful beach scenery with windmills at sunset, Xinjiang, China
    Hoover Dam, Nevada, United States — Stock Photo
    Hoover Dam, Nevada, United States
    Multi-generation women walking in sunny meadow — Stock Photo
    Multi-generation women walking in sunny meadow
    Facade of power station building. — Stock Photo
    Facade of power station building.
    Ginger boy looking at camera — Stock Photo
    Ginger boy looking at camera
    Strong Woman Using Kettlebell In Gym — Stock Photo
    Strong Woman Using Kettlebell In Gym
    Front view of a shirtless young athletic Caucasian man exercising on a footbridge in a city, stretching with a leg on the handrail — Stock Photo
    Front view of a shirtless young athletic Caucasian man exercising on a footbridge in a city, stretching with a leg on the handrail
    Turbines at wind farm near Vredendal, Western Cape, South Africa. — Stock Photo
    Turbines at wind farm near Vredendal, Western Cape, South Africa.
    Male worker working on machine at solar station plant — Stock Photo
    Male worker working on machine at solar station plant
    Back view of cool female bicyclist riding bike while demonstrating victory gesture with raised arm on city walkway — Stock Photo
    Back view of cool female bicyclist riding bike while demonstrating victory gesture with raised arm on city walkway
    Aerial view of alpine dam and reservoir lake Kolnbreinsperre, Malta valley, Carinthia, Austria — Stock Photo
    Aerial view of alpine dam and reservoir lake Kolnbreinsperre, Malta valley, Carinthia, Austria
    Playful grandmother and granddaughter on blanket in sunny field — Stock Photo
    Playful grandmother and granddaughter on blanket in sunny field
    Young male worker working at solar station — Stock Photo
    Young male worker working at solar station
    Desert wind farm, California, USA — Stock Photo
    Desert wind farm, California, USA
    Excited little sisters in casual wear lying on comfy bed and raising arms together looking at camera — Stock Photo
    Excited little sisters in casual wear lying on comfy bed and raising arms together looking at camera
    Wind turbines in field — Stock Photo
    Wind turbines in field
    Kinderdijk windmills in sunlight — Stock Photo
    Kinderdijk windmills in sunlight
    Mitochondria cross-section, illustration. Mitochondria are organelles found in the cytoplasm of eukaryotic cells. They oxidise sugars and fats to produce energy in a process called cellular respiration — Stock Photo
    Mitochondria cross-section, illustration. Mitochondria are organelles found in the cytoplasm of eukaryotic cells. They oxidise sugars and fats to produce energy in a process called cellular respiration
    Attentive male worker using laptop in office — Stock Photo
    Attentive male worker using laptop in office
    Friends in the swimming pool — Stock Photo
    Friends in the swimming pool
    Back view of hipster guy riding skateboard on paved long road with snowy mountains on background in Iceland. — Stock Photo
    Back view of hipster guy riding skateboard on paved long road with snowy mountains on background in Iceland.
    Couple walking on dirt road by field — Stock Photo
    Couple walking on dirt road by field
    Couple walking on road — Stock Photo
    Couple walking on road
    Wind mill at a wind farm during daytime — Stock Photo
    Wind mill at a wind farm during daytime
    Solar panels at solar station on a sunny day — Stock Photo
    Solar panels at solar station on a sunny day
    Energetic ethnic woman in wireless headphones and trendy clothes dancing hip hop with open mouth and eyes closed — Stock Photo
    Energetic ethnic woman in wireless headphones and trendy clothes dancing hip hop with open mouth and eyes closed
    Wind turbines at sunset; Nanticoke, Ontario, Canada — Stock Photo
    Wind turbines at sunset; Nanticoke, Ontario, Canada
    Back view of anonymous best female friends holding hands while running on tiled walkway in town — Stock Photo
    Back view of anonymous best female friends holding hands while running on tiled walkway in town
    Couple sitting together hugging — Stock Photo
    Couple sitting together hugging
    Serious mature female in activewear in protective boxing head guard with towel on shoulder standing on blue background and looking at camera — Stock Photo
    Serious mature female in activewear in protective boxing head guard with towel on shoulder standing on blue background and looking at camera
    Hover Dam Complex on Colorado River, Nevada, USA — Stock Photo
    Hover Dam Complex on Colorado River, Nevada, USA
    Spiral light bulb on deflated Earth globe, green energy concept. — Stock Photo
    Spiral light bulb on deflated Earth globe, green energy concept.
    Girls and boys in Science Club — Stock Photo
    Girls and boys in Science Club
    Human hands holding freshly baked pie — Stock Photo
    Human hands holding freshly baked pie
    Rear view of engineer walking at a wind farm — Stock Photo
    Rear view of engineer walking at a wind farm
    Attentive male worker using digital tablet in office — Stock Photo
    Attentive male worker using digital tablet in office
    Contemporary hydroelectric power station in landscape — Stock Photo
    Contemporary hydroelectric power station in landscape
    Solitaire, a settlement in Namib-Naukluft National Park; Namibia — Stock Photo
    Solitaire, a settlement in Namib-Naukluft National Park; Namibia
    Boy playing in a corn field, USA — Stock Photo
    Boy playing in a corn field, USA
    High voltage tower, electricity pylon, blue sky — Stock Photo
    High voltage tower, electricity pylon, blue sky