[{"@context":"https:\/\/schema.org\/","@type":"Article","@id":"https:\/\/www.fleuron.cz\/jak-byla-osidlena-sous\/#Article","mainEntityOfPage":"https:\/\/www.fleuron.cz\/jak-byla-osidlena-sous\/","headline":"Jak byla os\u00eddlena sou\u0161","name":"Jak byla os\u00eddlena sou\u0161","description":"O tom, \u017ee \u017eivot poch\u00e1z\u00ed z\u00a0mo\u0159e, dnes ji\u017e nikdo nepochybuje. Na potvrzen\u00ed t\u00e9to teorie m\u00e1me mnoh\u00e9 fosiln\u00ed n\u00e1lezy, kter\u00e9 jsou…","datePublished":"2023-09-28","dateModified":"2024-01-02","author":{"@type":"Person","@id":"https:\/\/www.fleuron.cz\/author\/#Person","name":"","url":"https:\/\/www.fleuron.cz\/author\/","identifier":1,"image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/e7b590144558ebad68292226b8af0772e2d53ba82fa105c348ae9b5254e51a11?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/e7b590144558ebad68292226b8af0772e2d53ba82fa105c348ae9b5254e51a11?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"fleuron.cz","logo":{"@type":"ImageObject","@id":"\/logo.png","url":"\/logo.png","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/www.fleuron.cz\/wp-content\/uploads\/art478053_16x9_20261004_155658_JLdz1p.jpg","url":"https:\/\/www.fleuron.cz\/wp-content\/uploads\/art478053_16x9_20261004_155658_JLdz1p.jpg","height":0,"width":0},"url":"https:\/\/www.fleuron.cz\/jak-byla-osidlena-sous\/","about":["Zv\u00ed\u0159ata"],"wordCount":386,"articleBody":"\tO tom, \u017ee \u017eivot poch\u00e1z\u00ed z\u00a0mo\u0159e, dnes ji\u017e nikdo nepochybuje. Na potvrzen\u00ed t\u00e9to teorie m\u00e1me mnoh\u00e9 fosiln\u00ed n\u00e1lezy, kter\u00e9 jsou objevov\u00e1ny po cel\u00e9m sv\u011bt\u011b. Z\u00a0nich je tak\u00e9 patrn\u00e9, \u017ee trvalo skute\u010dn\u011b velmi dlouho, ne\u017e byla os\u00eddlena i sou\u0161, a to hned z\u00a0n\u011bkolika d\u016fvod\u016f.\tV\u00a0prvn\u00ed \u0159ad\u011b zde byla velmi vysok\u00e1 \u00farove\u0148 UV z\u00e1\u0159en\u00ed. Tehdy je\u0161t\u011b neexistovala oz\u00f3nov\u00e1 vrstva, kter\u00e1 by proti n\u011bmu chr\u00e1nila. A to bylo pro organismy smrt\u00edc\u00ed. Proto se tak\u00e9 \u017eivot rozvinul ve vod\u011b, kter\u00e1 jej alespo\u0148 \u010d\u00e1ste\u010dn\u011b blokovala.\tTo se v\u0161ak zm\u011bnilo, kdy\u017e se objevily prvn\u00ed fotosyntetizuj\u00edc\u00ed organismy, kter\u00e9 za\u010daly produkovat kysl\u00edk. Jeho obsah v\u00a0mo\u0159\u00edch i v\u00a0atmosf\u00e9\u0159e postupn\u011b stoupal a\u017e do t\u00e9 m\u00edry, \u017ee se v\u00a0jej\u00edch vrchn\u00edch vrstv\u00e1ch za\u010dal tvo\u0159it oz\u00f3n. Tento proces trval samoz\u0159ejm\u011b nep\u0159edstaviteln\u011b dlouhou dobu, av\u0161ak vedl k\u00a0tomu, \u017ee \u017eivot ji\u017e mohl vstoupit na suchou zem.\tOv\u0161em byla zde i dal\u0161\u00ed p\u0159ek\u00e1\u017eka \u2013 nebyl k\u00a0tomu v\u00a0podstat\u011b d\u016fvod. Nesm\u00edme zapomenout, \u017ee na sou\u0161i v\u00a0tu dobu nebylo naprosto nic, a\u010dkoliv mo\u0159e p\u0159ekypovalo \u017eivotem. To tak\u00e9 znamenalo, \u017ee zde nebyla \u017e\u00e1dn\u00e1 potrava, a tedy ani d\u016fvod, pro\u010d by bylo nutn\u00e9 ji os\u00eddlovat.\tZm\u011bna nastala a\u017e ve chv\u00edli, kdy se prvn\u00ed \u0159asy a sinice za\u010daly zachyt\u00e1vat na kamenech na hranici p\u0159\u00edboje. D\u00edky tomu se musely adaptovat jak na \u017eivot v\u00a0mo\u0159i, tak i na sou\u0161i. A to byl prvn\u00ed krok k\u00a0tomu, aby se zde uchytily dal\u0161\u00ed organismy, nejprve rostliny a n\u00e1sledn\u011b tak\u00e9 \u017eivo\u010dichov\u00e9.\t\tJakmile byla sou\u0161 pln\u011b os\u00eddlena, za\u010daly se organismy zde vyv\u00edjet skute\u010dn\u011b p\u0159ekotn\u00fdm tempem. Ty prvn\u00ed je\u0161t\u011b pot\u0159ebovaly vodu k\u00a0tomu, aby do n\u00ed chodily vychov\u00e1vat mlad\u00e9, av\u0161ak netrvalo dlouho, ne\u017e se objevila vejce s\u00a0pevnou sko\u0159\u00e1pkou, kter\u00e1 ji\u017e dostatek vody obsahovala a tak\u00e9 tuto vodu nijak neztr\u00e1cela.\tD\u016fsledek toho v\u0161eho pak m\u016f\u017eeme vid\u011bt i dnes, kdy \u017eivot najdeme bez v\u00fdjimky na v\u0161ech kontinentech. Je tedy jasn\u00e9, \u017ee se uchyt\u00ed, kdekoliv je to jen trochu mo\u017en\u00e9.                                                                                                                                                                                                                                                                                                                                                                                                "},{"@context":"https:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Jak byla os\u00eddlena sou\u0161","item":"https:\/\/www.fleuron.cz\/jak-byla-osidlena-sous\/#breadcrumbitem"}]}]