{"id":2227,"date":"2024-08-16T20:57:19","date_gmt":"2024-08-16T18:57:19","guid":{"rendered":"https:\/\/www.povijest.net\/?p=2227"},"modified":"2024-12-18T12:20:20","modified_gmt":"2024-12-18T11:20:20","slug":"kako-se-promijenila-ljudska-boja-koze","status":"publish","type":"post","link":"https:\/\/povijest.net\/ca\/2024\/kako-se-promijenila-ljudska-boja-koze\/","title":{"rendered":"Kako se promijenila ljudska boja ko\u017ee?"},"content":{"rendered":"\n<p>Jedan zanimljiv primjer evolucijskih promjena kod \u010dovjeka je razvoj boje ko\u017ee. Na\u0161i drevni preci \u017eivjeli su u Africi, gdje je sunce jako sjalo. Kako bi se za\u0161titili od \u0161tetnih sun\u010devih zraka, njihova ko\u017ea je imala puno melanina, pigmenta koji daje tamniju boju ko\u017ee. Tamnija ko\u017ea pomagala je u za\u0161titi od o\u0161te\u0107enja izazvanih suncem.<\/p>\n\n\n\n<!--more-->\n\n\n\n<p>Me\u0111utim, kako su se ljudi po\u010deli seliti u hladnija podru\u010dja s manje sunca, kao \u0161to je Europa, nije im vi\u0161e bila potrebna tako tamna ko\u017ea. U tim podru\u010djima, svjetlija ko\u017ea je bila prednost jer omogu\u0107ava tijelu da lak\u0161e proizvodi vitamin D, koji je va\u017ean za zdrave kosti. Kroz puno generacija, ljudi koji su \u017eivjeli u takvim hladnijim podru\u010djima razvili su svjetliju ko\u017eu.<\/p>\n\n\n\n<div style=\"height:60px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"935\" height=\"500\" src=\"https:\/\/povijest.net\/ca\/wp-content\/uploads\/2024\/08\/dino-ptice.jpg\" alt=\"Razvoj ptica\" class=\"wp-image-2220\" srcset=\"https:\/\/povijest.net\/ca\/wp-content\/uploads\/2024\/08\/dino-ptice.jpg 935w, https:\/\/povijest.net\/ca\/wp-content\/uploads\/2024\/08\/dino-ptice-300x160.jpg 300w, https:\/\/povijest.net\/ca\/wp-content\/uploads\/2024\/08\/dino-ptice-768x411.jpg 768w\" sizes=\"auto, (max-width: 935px) 100vw, 935px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<p>\u017deli\u0161 li doznati \u0161to je evolucija <a href=\"https:\/\/povijest.net\/ca\/2024\/sto-je-evolucija\/\" data-type=\"post\" data-id=\"2216\">provjeri na ovoj poveznici<\/a>.<\/p>\n<\/div>\n<\/div>\n\n\n\n<div style=\"height:22px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<p>Zanima te odgovor na pitanje jesu li ljudi i dinosauri \u017eivjeli zajedno? <a href=\"https:\/\/povijest.net\/ca\/2024\/jesu-li-dinosauri-i-ljudi-zivjeli-zajedno\/\" data-type=\"post\" data-id=\"2207\">Potra\u017ei je na ovoj poveznici.<\/a><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"935\" height=\"500\" src=\"https:\/\/povijest.net\/ca\/wp-content\/uploads\/2024\/08\/dino.jpg\" alt=\"Susret dinosaura i \u010dovjeka\" class=\"wp-image-2208\" srcset=\"https:\/\/povijest.net\/ca\/wp-content\/uploads\/2024\/08\/dino.jpg 935w, https:\/\/povijest.net\/ca\/wp-content\/uploads\/2024\/08\/dino-300x160.jpg 300w, https:\/\/povijest.net\/ca\/wp-content\/uploads\/2024\/08\/dino-768x411.jpg 768w\" sizes=\"auto, (max-width: 935px) 100vw, 935px\" \/><\/figure>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Poja\u0161njenje evolucije za u\u010denike 5. razreda na primjeru boje ko\u017ee<\/p>\n","protected":false},"author":1,"featured_media":2223,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_EventAllDay":false,"_EventTimezone":"","_EventStartDate":"","_EventEndDate":"","_EventStartDateUTC":"","_EventEndDateUTC":"","_EventShowMap":false,"_EventShowMapLink":false,"_EventURL":"","_EventCost":"","_EventCostDescription":"","_EventCurrencySymbol":"","_EventCurrencyCode":"","_EventCurrencyPosition":"","_EventDateTimeSeparator":"","_EventTimeRangeSeparator":"","_EventOrganizerID":[],"_EventVenueID":[],"_OrganizerEmail":"","_OrganizerPhone":"","_OrganizerWebsite":"","_VenueAddress":"","_VenueCity":"","_VenueCountry":"","_VenueProvince":"","_VenueState":"","_VenueZip":"","_VenuePhone":"","_VenueURL":"","_VenueStateProvince":"","_VenueLat":"","_VenueLng":"","_VenueShowMap":false,"_VenueShowMapLink":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[177],"tags":[176,229,183],"class_list":["post-2227","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-povijest-os","tag-5-razred","tag-evolucija","tag-gimnazije"],"jetpack_publicize_connections":[],"_links":{"self":[{"href":"https:\/\/povijest.net\/ca\/wp-json\/wp\/v2\/posts\/2227","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/povijest.net\/ca\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/povijest.net\/ca\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/povijest.net\/ca\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/povijest.net\/ca\/wp-json\/wp\/v2\/comments?post=2227"}],"version-history":[{"count":1,"href":"https:\/\/povijest.net\/ca\/wp-json\/wp\/v2\/posts\/2227\/revisions"}],"predecessor-version":[{"id":8342,"href":"https:\/\/povijest.net\/ca\/wp-json\/wp\/v2\/posts\/2227\/revisions\/8342"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/povijest.net\/ca\/wp-json\/wp\/v2\/media\/2223"}],"wp:attachment":[{"href":"https:\/\/povijest.net\/ca\/wp-json\/wp\/v2\/media?parent=2227"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/povijest.net\/ca\/wp-json\/wp\/v2\/categories?post=2227"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/povijest.net\/ca\/wp-json\/wp\/v2\/tags?post=2227"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}