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Melatonin is a hormone, released primarily by the pineal gland, that regulates the sleep–wake cycle. 3D ball-and-stick model, white background

High quality stock aerial photos of the Wildcat Creek Marsh in Richmond CA. The creek and marsh directly abuts the San Francisco Bay.

Aerial view of an airplane flying over Lake Magadi in the Great Rift Valley, Kenya. Lake Magadi is the southernmost lake in the Kenyan Rift Valley, north of Tanzania's Lake Natron. The Rift Valley contains a chain of volcanoes and many other lakes such as the Turkana, Baringo, Bogoria and Nakuru. During the dry season Lake Magadi is covered by soda and is known for its wading birds. During the rainy season, a thin layer of brine covers much of the saline pan that evaporates rapidly leaving a surface of salt that cracks. The lake is recharged by saline hot springs and is very rich in blue-green algae, which feed insects and massive flocks of lesser flamingos (Phoenicoparrus minor). Altogether it forms a very peculiar mineral and colour-rich landscape. Currently the area is inhabited by the cattle-herder Masai tribes, but the relics of many hominids have been found in the escarpments.

Aerial photo taken from a small plane showing a patchwork quilt of the salt works below at Useless Loop, Shark Bay, Western Australia

$Blue Pond is a tourist destination in Hokkaido.\nIt was bluer than I expected.$

A large tailings pond in the Alberta Oilsands. Tailings ponds are used to separate the heavy oil bitumen from the sticky sand mined from around the area.

Aerial view of Phaselis Bay in Antalya, Turkiye.

Landscape damaged by coal mining. Aerial view of fossil fuels produced in the Czech Republic.

Waterfalls, landscapes and curiosities of São Thome das Letras - MG

Unique sandstone formations along the shoreline of Hornby Island, a popular travel destination along the west coast of Canada.

Gastric mucosa intestinal metaplasia under microscopy

Eutrophication of the Khadzhibey estuary, blooms in the water of the blue-green algae Microcystis aeruginosa and the mass development of the green algae Enteromorpha sp.

This is a global environmental problem of nature pollution. Baltic sea in summer.

view on the green algae of the nature reserve of the bay of saint brieuc

Drought scene in Poyang Lake, Jiangxi, China

Acid Water Waste From Copper Mine In Romania - Valea Sesii - entire village covered by mine waste

Cascades on the river Krupa in the canyon, Dalmatia, Croatia

natural Textures of sulfuric deep red Water of Rio Tinto river, Province Huelva, Andalusia, Spain

Hot river at Geothermalatea in the Haukadalur valley, east of Reykjavík, Iceland.

Salt Lake. Self-settling sodium chloride salt on rocks near the shore. Hypersaline water in a drying lake is an environmental problem. Kuyalnik Estuary, Ukraine

Hypertension disease renal different area under microscopy, this is art treated normal light microscopy image,for original image check my other files

Faxe Kalkbrud, Limestone quarry in Denmark

Aerial drone view of the Shubenacadie River, home to extreme tidal influence.

$These lakes attract the attention of nature lovers, bird watchers and tourists with their different colors due to the minerals they contain.\n\nMany vibrant colors such as natural colors, geometric shapes, abstract shapes, red, pink, blue, yellow, etc. occur on the lake surface.\n Photographs on the theme of drought and global climate.\n\nOne of Turkey's unique natural beauties, a lake that takes on gr\neen, yellow, and pink hues due to the minerals it contains, has become a focal point for nature lovers, migratory birds, and tourists. This extraordinary natural wonder captivates with its stunning scenery and ecological significance.\n\nThe lake showcases various colors thanks to the diverse minerals it contains. The green, yellow, and pink shades add an exceptional beauty to the water and its surroundings. These color variations stem from the presence of magnesium, salt, and other mineral compounds in the lake's water.\n\nThis natural beauty attracts significant interest from nature enthusiasts and tourists alike. The lake is perfect for activities such as nature walks, bird watching, and photography. Visitors can stroll around the lake, enjoy the wildlife, and immerse themselves in the serene environment.\n\nThis colorful lake is an ideal destination for anyone looking to explore Turkey's natural beauty. For those who wish to experience the blend of vibrant colors and birdlife, this lake promises a journey filled with unforgettable memories.$

Solar salt pans at Laguna Ojo de Liebre on the Pacific Ocean side of Baja California Sur. Mexico. Vizcaíno Biosphere Reserve UNESCO World Heritage Site. Salt evaporation ponds.

Aerial view of Lake Magadi Lake in the Great Rift Valley of Kenya. Lake Magadi is the southernmost lake in the Kenyan Rift Valley, north of Tanzania's Lake Natron. The Rift Valley contains a chain of volcanoes, some of which are still active, and many other lakes such as the Turkana, Baringo, Bogoria and Nakuru. During the dry season Lake Magadi is 60% covered by soda and is known for its wading birds. During the rainy season, a thin layer of brine covers much of the saline pan, but this evaporates rapidly leaving a vast expanse of white salt that cracks to produce large polygons. The lake is recharged by saline hot springs that discharge into alkaline lagoons around the lake margins and is very rich in blue-green algae, which feed insects, small crustaceans and massive flocks of lesser flamingos (Phoenicoparrus minor). Altogether it forms a very peculiar mineral and colour-rich landscape. The lake is featured in film The Constant Gardener, which is based on the book of the same name by John le Carré although in the film the shots are supposed to be at Lake Turkana. Currently the area is inhabited by the cattle-herder Masai tribes, but the relics of many hominids have been found in the escarpments.

Top-down view of low tide shore with mud

Aerial View Above Pond Bog Swamp Sinkhole Drain

Aerial photo from a drone of a salt marsh in Tollesbury, Essex, UK. This particular marsh is located in the RSPB Old Hall Marshes in the Blackwater Estuary National Nature Reserve.

Free Images: "bestof:Delta-octalactone.svg Chemical structure of delta-octalactone Own 13 47 7 September 2016 UTC Ed Edgar181 Delta-lactones"

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