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Tryptophan or Trp is an amino acid that is used in the biosynthesis of proteins. 3d illustration

$Drone photography of a peaceful rocky coastline and beautiful turquoise waters.\nMediterranean Sea, Rhodes Island, Greece.$

The lake water and trees show a variety of green

Aereal view of water near San Francisco Bay

Clear water of Lake Dukka Rybka on the Malaya Dukka River on the slopes of the Arkasar ridge in the North Caucasus on a sunny summer day, Arkhyz, Karachay-Cherkessia, Russia

This April 2021 photo shows the orange-red waters of the Ōpārara River contrasted against the rainforest in Kahurangi National Park near Karamea, Aotearoa New Zealand.

An aerial view of a blue sea with clear crystal azure water in Liguria, Italy

Mammoth Hot Springs feature in Yellowstone National Park

$THE SOURCE OF THE UREDERRA IS LOCATED IN THE NATURAL PARK OF URBASA AND ANDÍA IN THE PROVINCE OF NAVARRA AND MORE SPECIFICALLY IN THE REGION OF TIERRA ESTELLA.\n\n THE MURMULUM OF THE CRYSTALLINE WATER, THE LIGHT THAT FILTERS BETWEEN THE LEAVES OF THE TREES, DYING THE LANDSCAPE LIME GREEN, AND THE SCENT OF NATURE CONTRIBUTE TO MAKING THIS PLACE, DECLARED A NATURAL RESERVE IN 1987, BEING ONE OF THE MOST SPECTACULAR ENCLAVES IN THE WHOLE PENINSULA. ALL THE VISITOR THAT COMES WILL TAKE A MEMORY FOREVER OF ITS CRYSTALLINE WATERS AND ITS TURQUOISE COLOR POOLS$

A view of the Amboy salt flats Chloride.

Aquatic plants. Freshwater algae background. Photographer's shadow. Ecological concept. Blur under water.

Beautiful view on one of the lakes in the national park, sunlight.

Water of hot spring in Chae Son national park in Lampang province, Thailand

A clear blue ocean seen from above. The water is very peaceful and on the bottom of the ocean are big stones.

Waiotapu Thermal Park, Rotorua / New Zealand

Plitvice Lakes National Park Croatia. Mountain landscape with many streams of water and waterfalls. Travel and nature concept.

Paradise, shallow clear blue sea and clear skies at Pedn Vounder Beach, Cornwall.

Cefazolin, cefazoline, cephazolin molecule. It is s beta-lactam antibiotic, first-generation cephalosporin. Molecular model. 3D rendering. 3D illustration

$Country: New Zealand\nLocation: Rotorua - Wai-O-Tapu$

A quarry with a lake in a quarry for the extraction of white limestone. Inkerman. Crimea.

Beautiful turqouise colored Adriatic sea at Porat Beach, in island of Bisevo, Croatia

Contaminated surface of abandoned copper mine in Limni, Cyprus. Odd colours and shapes derive from high levels of toxic chemicals

Gorgeous Gökpınar pond with its clear turquoise water and underwater plants in green nature, Sivas - Gürün TURKEY

Free Images: "bestof:2-phenethylbenzoic acid.png en 2-phenethylbenzoic acid http //pubchem ncbi nlm nih gov/image/imgsrv fcgi t l cid 78603 unknwn 2009-02-23 PD-USGov Alkylbenzoic"

Videographer recording effects of acid mine runoff in stream.jpg

Northern_Cardinal_(Cardinalis_cardinalis).jpg

Concrete_mixing_plant,_Birmingham,_Alabama,_view_1.jpg

Concrete_mixing_plant,_Birmingham,_Alabama,_view_2.jpg

Antoine_Vollon_-_Mound_of_Butter_-_National_Gallery_of_Art.jpg

Goldsboro,_North_Carolina,_April_1938.jpg

Sharecropping_family_in_Wilmington,_North_Carolina.jpg

A_"Whirlwind"_radial_airplane_engine.jpg

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Sewing_sign_advertisement_during_Great_Depression_-_Chapel_Hill,_NC.jpg

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Girl_sewing_for_the_NYA_-_Gee's_Bend,_Alabama.jpg

Great_Depression,_young_girl_stringing_tobacco.jpg

African_American_Barber,_Chicago,_Illinois.jpg

Prostitution_at_a_window_during_the_Great_Depression.jpg

Students_changing_classes_at_UNC,_Chapel_Hill,_NC.jpg

Farmers_waiting_for_tobacco_auction_in_Alamance_County,_NC.jpg

Female_Worker_in_WPA_Lunchroom,_Great_Depression_Era.jpg

Man_being_interviewed_in_Guilford_County,_NC.jpg

A_home_near_Raleigh,_North_Carolina_1938.jpg

Great_Depression_Era_White_Tenant_Farmer_in_North_Carolina_1936.jpg

Negro_preacher_at_revival_meeting,_La_Forge,_Missouri.jpg

Eastern_cicada_killer_wasp_(Sphecius_speciosus)_with_Cicada.jpg

Iron_ore_mine_and_company_houses._Jefferson_County,_Alabama.jpg

Vineyard,_Sonoma_County,_California,_1942.jpg

African_American_Church-_Washington,_D.C.jpg

Justice_of_the_Peace_in_Graham,_Alamance_County,_North_Carolina.jpg

WPA_seamstress_at_Farm_Security_Administration_labor_camp_in_June_of_1941.jpg