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    Pieces of fresh green Aloe Vera with white flesh on light background. — Stock Photo
    Pieces of fresh green Aloe Vera with white flesh on light background.
    Close-up of Butterfly sitting on a plant stem — Stock Photo
    Close-up of Butterfly sitting on a plant stem
    Anatomy of human brain on white background — Stock Photo
    Anatomy of human brain on white background
    Colored human embryonic stem cells, digital illustration. — Stock Photo
    Colored human embryonic stem cells, digital illustration.
    Abstract background of growing green cactus covered with even rows of sharp prickles — Stock Photo
    Abstract background of growing green cactus covered with even rows of sharp prickles
    From above of fresh ripe purple onions with green stems placed on black table — Stock Photo
    From above of fresh ripe purple onions with green stems placed on black table
    Green organic lemon — Stock Photo
    Green organic lemon
    Happy woman standing on field with red flowers in sunny day — Stock Photo
    Happy woman standing on field with red flowers in sunny day
    High angle of inflorescence of Solanum lycopersicum growing in green leaves cultivated in agricultural farm in sunny day — Stock Photo
    High angle of inflorescence of Solanum lycopersicum growing in green leaves cultivated in agricultural farm in sunny day
    Scientist using pipette tray at fume hood in laboratory — Stock Photo
    Scientist using pipette tray at fume hood in laboratory
    Close-up of technician storing stem cell samples in cryostorage. — Stock Photo
    Close-up of technician storing stem cell samples in cryostorage.
    Girl students examining liquid in beaker, conducting scientific experiment in laboratory classroom — Stock Photo
    Girl students examining liquid in beaker, conducting scientific experiment in laboratory classroom
    Scientist in rubber gloves filling pipette tray in laboratory — Stock Photo
    Scientist in rubber gloves filling pipette tray in laboratory
    Girl holding a dandelion clock seedhead — Stock Photo
    Girl holding a dandelion clock seedhead
    A gardener holding a sieve with fresh chard — Stock Photo
    A gardener holding a sieve with fresh chard
    Female engineer planning, creating flow chart in office — Stock Photo
    Female engineer planning, creating flow chart in office
    From above of small green echeveria plant placed on wooden table with roots and dirt in light place — Stock Photo
    From above of small green echeveria plant placed on wooden table with roots and dirt in light place
    Yellow poppy flower on white background. — Stock Photo
    Yellow poppy flower on white background.
    Smiling female science teacher leading lesson at projection screen in classroom — Stock Photo
    Smiling female science teacher leading lesson at projection screen in classroom
    Boy amidst plants — Stock Photo
    Boy amidst plants
    Scientists viewing sample on glass slide under light microscope. — Stock Photo
    Scientists viewing sample on glass slide under light microscope.
    Students conducting scientific experiment in laboratory classroom — Stock Photo
    Students conducting scientific experiment in laboratory classroom
    Top view of row of green and ripe cherry tomatoes showing ripening stage on white gauze — Stock Photo
    Top view of row of green and ripe cherry tomatoes showing ripening stage on white gauze
    Visual rendering of human brain — Stock Photo
    Visual rendering of human brain
    Monstera leaf in vase on stone background — Stock Photo
    Monstera leaf in vase on stone background
    Glass with dark chocolate mousse — Stock Photo
    Glass with dark chocolate mousse
    Top view of raw cut Boletus edulis mushrooms on wooden chopping board with garlic and parsley in light kitchen during cooking process — Stock Photo
    Top view of raw cut Boletus edulis mushrooms on wooden chopping board with garlic and parsley in light kitchen during cooking process
    Close-up of a bug on a plant, Indonesia — Stock Photo
    Close-up of a bug on a plant, Indonesia
    A hummingbird sits on a branch — Stock Photo
    A hummingbird sits on a branch
    Closeup view of beautiful chameleon crawling on tree trunk in wildlife — Stock Photo
    Closeup view of beautiful chameleon crawling on tree trunk in wildlife
    Frozen blackberries and blueberries with red plant stem — Stock Photo
    Frozen blackberries and blueberries with red plant stem
    Top view of blossoming lush bud of white lilies eustoma at daylight — Stock Photo
    Top view of blossoming lush bud of white lilies eustoma at daylight
    Instructor using demo board to explain HVAC control system operation one student in wheelchair — Stock Photo
    Instructor using demo board to explain HVAC control system operation one student in wheelchair
    Cute tree frog sitting on flowers stem, blurred background — Stock Photo
    Cute tree frog sitting on flowers stem, blurred background
    Various pot plants on wooden table — Stock Photo
    Various pot plants on wooden table
    Leafless branch with spring buds — Stock Photo
    Leafless branch with spring buds
    Colored human embryonic stem cells, digital illustration. — Stock Photo
    Colored human embryonic stem cells, digital illustration.
    Embryonic stem cells, illustration. — Stock Photo
    Embryonic stem cells, illustration.
    Black-eyed Susan stems grow side by side in a garden, looking the same as if to be a mirror image; Astoria, Oregon, United States of America — Stock Photo
    Black-eyed Susan stems grow side by side in a garden, looking the same as if to be a mirror image; Astoria, Oregon, United States of America
    Hand holding wild grass stem — Stock Photo
    Hand holding wild grass stem
    Female standing in lush greenhouse and hiding face behind branch of tree with green foliage — Stock Photo
    Female standing in lush greenhouse and hiding face behind branch of tree with green foliage
    Close-up of transparent glass vases with bunches of fresh flowers placed on table for event — Stock Photo
    Close-up of transparent glass vases with bunches of fresh flowers placed on table for event
    Bleeding heart (Dicentra spectabilis), X-ray. — Stock Photo
    Bleeding heart (Dicentra spectabilis), X-ray.
    Back view anonymous shirtless male sitting in dark room near tender thin plant twig with withering leaves — Stock Photo
    Back view anonymous shirtless male sitting in dark room near tender thin plant twig with withering leaves
    Beautiful freshly cut long twigs with green leaves and purple flowers standing in glass jar with water on round wooden table in old shabby room with mirrors — Stock Photo
    Beautiful freshly cut long twigs with green leaves and purple flowers standing in glass jar with water on round wooden table in old shabby room with mirrors
    Dense evergreen forest with covered by moss tall redwoods in Big Basin Redwoods State Park in USA — Stock Photo
    Dense evergreen forest with covered by moss tall redwoods in Big Basin Redwoods State Park in USA
    Crop anonymous person touching plant twig with frost on thin leaves on blurred background — Stock Photo
    Crop anonymous person touching plant twig with frost on thin leaves on blurred background
    Female junior high teacher helping girl student at computer in computer lab — Stock Photo
    Female junior high teacher helping girl student at computer in computer lab
    Fragrant appetizing fresh raspberries with green stem in white square bowl and metal sieve with handle on table — Stock Photo
    Fragrant appetizing fresh raspberries with green stem in white square bowl and metal sieve with handle on table
    Close-up of Geometrid moth caterpillar mimicking branch on wild plant stem. — Stock Photo
    Close-up of Geometrid moth caterpillar mimicking branch on wild plant stem.
    Junior high students at computers watching teacher at projection screen in classroom — Stock Photo
    Junior high students at computers watching teacher at projection screen in classroom
    From above of festive Christmas bouquet with branches of cotton, fir and twigs of eucalyptus and bright red branches with berries placed on wooden table with candles in room — Stock Photo
    From above of festive Christmas bouquet with branches of cotton, fir and twigs of eucalyptus and bright red branches with berries placed on wooden table with candles in room
    Small unripe cherry tomatoes growing on twig of plant in agricultural farm in rural area — Stock Photo
    Small unripe cherry tomatoes growing on twig of plant in agricultural farm in rural area
    Student in wheelchair examining fuel control valves on furnace in HVAC classroom — Stock Photo
    Student in wheelchair examining fuel control valves on furnace in HVAC classroom
    From above of festive stylish decorative Christmas bouquet with twigs of eucalyptus and bright red branches with berries placed on wooden table in room — Stock Photo
    From above of festive stylish decorative Christmas bouquet with twigs of eucalyptus and bright red branches with berries placed on wooden table in room
    Top view of raw cut Boletus edulis mushrooms on rustic wooden chopping board during cooking process — Stock Photo
    Top view of raw cut Boletus edulis mushrooms on rustic wooden chopping board during cooking process
    Attentive woman checking plant — Stock Photo
    Attentive woman checking plant
    Junior high students using computers in computer lab — Stock Photo
    Junior high students using computers in computer lab
    Close-up of caterpillar cocoon attached to thin stem. — Stock Photo
    Close-up of caterpillar cocoon attached to thin stem.
    Crop anonymous children at table with green seedling growing in carton cup with soil in house — Stock Photo
    Crop anonymous children at table with green seedling growing in carton cup with soil in house