Tag: Photo

• M83: The Thousand Ruby Galaxy : Big, bright, and beautiful,… http://ift.tt/1P4Jadc

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• Tirumala limniace (male) 淡紋青斑蝶 (雄) by YoyoFreelance http://flic.kr/p/zmBS5D

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  via Tumblr http://bit.ly/1MASRBo

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• A Real Cliffhanger.. by Rob Valentic – Gondwana Reptile Productions http://flic.kr/p/zmgQAr

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  via Tumblr http://bit.ly/1RmZ5mk

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• meow irl via /r/MEOW_IRL http://bit.ly/1RHOgv5

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  via Tumblr http://bit.ly/1MARcvv

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• MEOW_IRL via /r/MEOW_IRL http://bit.ly/1P4Himn

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  via Tumblr http://bit.ly/1iwiQvH

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• The Grab by nsummers403 http://flic.kr/p/A2SiDi

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  via Tumblr http://bit.ly/1MARaUC

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• colourful dahlia by C-Smooth http://flic.kr/p/A2rMkG

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  via Tumblr http://bit.ly/1M5gs7w

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• A photo for a book project in evolution…the beautiful eyes of Bella. The earliest human ancestors came from the continent of Africa, as #primates adapted and then branched off into many different species that eventually became our modern day human beings appeared. Since the equator cuts directly through the continent of Africa, the countries there receive almost direct sunlight, with ultraviolet rays, and the warm temperatures it brings pressured for the natural selection of dark skin color. Pigments, like melanin in the skin, protect against these harmful rays of the sun. Individuals with darker skin live longer and they would reproduce and pass down the dark skinned genes to their offspring. #Naturalselection for the lighter eye colors are linked to the relaxation of selection for darker skin tones. As human ancestors began to migrate to various places around the world, the pressure for selection of dark skin color was not as intense. These much higher latitudes afforded different seasons with much less direct sunlight , like near the equator, the selection pressure was no longer as intense, genes were more likely to #mutate. The color of human #eyes is not dictated by a single gen many it of the other traits. It is instead considered a polygenic trait, meaning there are several different genes on various chromosomes that carry information about what eye color an individual should possess. These genes, when expressed, then blend together to make various shades of different colors. Relaxed selection for dark eye color also allowed more mutations to take hold. This created even more alleles available to combine together in the gene pool to create different eye colors. #Sexualselection may also explain some of the different eye colors that have popped up over time. Mating, in humans, tends to be non-random and as a species, we are able to choose our mates based on desirable characteristics. Some individuals may find one eye color much more appealing over another and choose a mate with that color of eyes. Then, those genes are passed down to their offspring and continue to be available in the gene pool. @robertclarkphoto @thephotosociety by natgeo http://ift.tt/1GHJNYT

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  via Tumblr http://bit.ly/1MrAbh2

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• meow🇺🇸irl via /r/MEOW_IRL http://bit.ly/1OhuZTz

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  via Tumblr http://bit.ly/1M5ejc6

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• Photograph by @paulnicklen // Ochre Stars among the anemones. With @cristinamittermeier and @sea_legacy #starfish #nature #wildlife #smile #love #beauty #picoftheday #photooftheday by natgeo http://ift.tt/1ifXkLC

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  via Tumblr http://bit.ly/1GHcCoC

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• Autumn at Chatsworth, Derbyshire, England [OC] [3264×2448] via /r/EarthPorn http://bit.ly/1NisE9n

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  via Tumblr http://bit.ly/1kkNQA5

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• We will just sleep here till you let us out via /r/cats http://bit.ly/1PZmjBx

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  via Tumblr http://bit.ly/1M5bHLt

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• MEOW_IRL via /r/MEOW_IRL http://bit.ly/1Q43Y5b

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  via Tumblr http://bit.ly/1KR1pN4

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• Photo by @daviddoubilet Tucked in toxic tentacles. A pink clownfish peers out at me, safe within the folds of its host anemone in #KimbeBay #PapuaNewGuinea. Clownfish, also called anemone fish, are immune to the toxins produced by its home. I am a confirmed clownfish addict. I cant swim past them without stopping to check what species it is and to look for eggs ready to hatch. Kimbe Bay is the site one of the longest running research studies on anemones and clownfish and their importance as indicator species to coral reef health. I will be posting a series of clownfish from reefs around the world this week as we present #NGLive Coral Kingdoms and Empires of Ice at the Amoss Center Bel air Maryland Oct 29 with @jenniferhayesig @thephotosociety #nemo #CoralTriangle #CoralReef by natgeo http://ift.tt/1kPPV7J

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  via Tumblr http://bit.ly/1Q02olW

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