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Blue colored stem cells of a lentil plant under the microscope.

$deep blue water well stretches before your eyes, reflecting the clear sky and white clouds. Its calm surface invites you to dive into its mysterious depths, where the light filters through creating a spectacle of blue and turquoise tones. A magical place where serenity and beauty merge in perfect harmony.\nPozo Azul de Covanera, Burgos, Spain$

geranium leaf under microscope showing trichomes - optical microscope x200 magnification

Micrograph of a moss leaf, Dicranum, with elongated cells, and an elongated midrib (costa) that may be the water conducting cells of the leaf, with polarization at 200x.

Photomicrograph of filamentous blue-green algae, Oscillatoria species. Each band along the stand is one cell. This filament is very short probably having recently parted from a longer one. Filaments are typically many times longer. This algae is mobile, it moves and twists through the water. San Francisco Bay, California, USA. Live specimen. Wet mount, 40X objective, transmitted brightfield illumination. Note - motion blur of live specimen, very shallow depth of field, chromatic aberration and uneven focus are inherent in light microscopy.

Epidermis. Electron microscope micrograph showing a keratinocyte of spinous layer. The epithelial cell has a polygonal shape, central nucleus with nucleolus, cytoplasm full of keratin filament bundles, and numerous dark desmosomes crossing the intercellular spaces.

Curved footpath across the valley. Diminishing perspectrive

Cross-section Dicot, Monocot and Root of Plant Stem under the microscope for classroom education.

Volcanic rock formations landscape in Cappadocia, Turkey

Background with a mole hole in the ground covered with grass close up outdoors

$Close-up shooting of a green agate stone mineral surface isolated on white background. Its a macro shot shows nature beautiful details with back lit. Agate is a kind of natural gemstone. Abstract pattern. Good for Wallpaper texture background. Turquoise, green\n\n.$

Close up of one open termite Hill, as they called it - the Poor-man's Cement - as local people use it at building their mud houses. Madagascar

overhead view of collapsed mine big hole in land

Unique underground geology of stalactites and stalagmites.

gopher burrow in the ground on the field

Black Pearl Geyser stands out due to its distinctive deep blue pool surrounded by black, crusty deposits that resemble the surface of a pearl, hence its evocative name. It is a key feature in the Biscuit Basin geothermal area, which is part of the larger Upper Geyser Basin.

View through the bridge. Azores. Sao Miguel. High quality photo

View of greenfield and mountain landscape

$Aardvark (Orycteropus afer) entrance to hole in dry sandy soil\n\nMole National Park, Ghana, Africa. November$

Photomicrograph of two rotifers. Rapidly rotating cilia at top of heads, internal organs visible. Live specimen. Wet mount, 10X objective, transmitted brightfield illumination.

The beautiful wallpaper of footpath through green field

Overgrown drain cover in an alley in Norwich

Planarian parasite (flatworm) under microscope view.

A hole in the ground that is dug into a hole. Top view

Hole in the ground caused by fallen tree. Forest floor covered with dry leaves

Thurston lava tube loop surrounding nature, Pahoa -Kea'au, Hawaii

Microscopic photography of Steam of wood dicotyledon, cross section.

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Pieter_Brueghel_the_Elder_-_The_Dutch_Proverbs_-_Google_Art_Project.jpg

Jacques-Louis David, The Coronation of Napoleon edit.jpg

Silene donkey kylix running Ancient Agora Museum Athens.jpg

Araucaria araucana cones at Hulda Klager Lilac Gardens.jpg

La Peña Vieja de Arcos de la Frontera.JPG

Inauguration plaque Hall of Augustals Herculaneum.jpg

Five saints, Nardo di Cione, WAF 1028, Alte Pinakothek Munich.jpg

Bull head lamp terracotta 32 Ancient Agora Museum Athens.jpg

MANNapoli Secret Cabinet entrance Italy.jpg

Cave of Pan relief Agora Museum Athens.jpg

$Xantho poressa 2009 G1.jpg$

Monument pedestal Krates victory S399 ancient agora museum Athens.jpg

Washington_Crossing_the_Delaware_by_Emanuel_Leutze,_MMA-NYC,_1851.jpg

Philia Hellenic Center for Marine Research Heraklion harbour.jpg

Typical colonial houses Margarita Island.jpg

Statue Cola de Rienzi, Capitole, Rome, Italy.jpg

German bunkers remains at Pointe du Hoc.jpg

Train leaving the tunnel at via Lanzi.jpg

Saturn-Supreme-Majorettes-in-the-St-Albans-Carnival.jpg

Beach at Moeraki Boulders on a foggy day.jpg

Brick vaults entrance amphitheatre Pompeii.jpg

President_Obama,_Minister_Di_Rupo_and_King_Philippe_at_Flanders_Field_American_Cemetery_in_Belgium.jpg

Curling Torino 2006 Pinerolo Palaghiaccio scena2.jpg

Tomb Cardinal Pietro Foscari, Santa Maria del Popolo, Rome, Italy.jpg

$Japan1170-Tea-set.jpg$

Ceiling painting chapel San Gennaro cathedral Naples.jpg