{"id":1134,"date":"2025-11-14T08:30:24","date_gmt":"2025-11-14T08:30:24","guid":{"rendered":"https:\/\/deliry.com\/svt\/?page_id=1134"},"modified":"2025-11-14T08:55:32","modified_gmt":"2025-11-14T08:55:32","slug":"alycia-et-teo-tb-2","status":"publish","type":"page","link":"https:\/\/deliry.com\/svt\/alycia-et-teo-tb-2\/","title":{"rendered":"Alycia  et T\u00e9o &#8211; TB"},"content":{"rendered":"\n<p class=\"has-theme-palette-5-color has-theme-palette-9-background-color has-text-color has-background has-link-color has-xxlarge-font-size wp-elements-7f5fe07d84325935b4c25b8befda0014\"><strong>Sortie des eaux<\/strong><\/p>\n\n\n\n<p>libre de droit-<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"400\" src=\"https:\/\/deliry.com\/svt\/wp-content\/uploads\/2025\/11\/image-36.png\" alt=\"\" class=\"wp-image-1165\" srcset=\"https:\/\/deliry.com\/svt\/wp-content\/uploads\/2025\/11\/image-36.png 700w, https:\/\/deliry.com\/svt\/wp-content\/uploads\/2025\/11\/image-36-300x171.png 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><figcaption class=\"wp-element-caption\"><a href=\"https:\/\/www.pourlascience.fr\/sd\/paleontologie\/la-sortie-des-eaux-saumatres-des-premiers-tetrapodes-13899.php\"><em>https:\/\/www.pourlascience.fr\/sd\/paleontologie\/la-sortie-des-eaux-saumatres-des-premiers-tetrapodes-13899.php<\/em><\/a><\/figcaption><\/figure>\n\n\n\n<p><strong>La sortie des eaux repr\u00e9sente l\u2019un des tournants les plus importants de l\u2019histoire de la vie sur Terre. Pendant des centaines de millions d\u2019ann\u00e9es, les oc\u00e9ans ont abrit\u00e9 toutes les formes de vie. Lorsque certaines esp\u00e8ces ont commenc\u00e9 \u00e0 explorer les rivages, elles ont ouvert la voie \u00e0 l\u2019apparition d\u2019animaux terrestres tels que les amphibiens, les reptiles, les oiseaux et les mammif\u00e8res.<\/strong><\/p>\n\n\n\n<p class=\"has-theme-palette-2-color has-text-color has-link-color has-larger-font-size wp-elements-b057d5c92a43163626311a93e5fda7de\"><strong>Les premi\u00e8res esp\u00e8ces \u00e0 conqu\u00e9rir la terre<\/strong>.<\/p>\n\n\n\n<p class=\"has-medium-font-size\"><strong>La vie d\u00e9bute dans les oc\u00e9ans(hydrosphere)<\/strong><\/p>\n\n\n\n<p><strong> Durant des milliards d&rsquo;ann\u00e9es, notre plan\u00e8te n&rsquo;a connu que des formes de vie exclusivement marines. Les premi\u00e8res cellules ont \u00e9merg\u00e9 dans l&rsquo;\u00e9l\u00e9ment marin, o\u00f9 l&rsquo;eau constituait un environnement \u00e0 la fois stable et protecteur. Progressivement, ces organismes primitifs se sont complexifi\u00e9s et diversifi\u00e9s : des bact\u00e9ries aux algues, puis aux cr\u00e9atures marines plus \u00e9labor\u00e9es telles que les m\u00e9duses, les mollusques et les premiers poissons. L&rsquo;ocean est pendant des an\u00e9es le berceaux de la vie puisqu&rsquo;il offre une protection contre les rayonnements ultraviolets, assure une r\u00e9gulation thermique et facilite les r\u00e9actions chimiques indispensables \u00e0 l&rsquo;existence biologique.<\/strong><\/p>\n\n\n\n<p class=\"has-small-font-size\"><a href=\"https:\/\/deliry.com\/svt\/wp-content\/uploads\/2025\/09\/CH1_1_AtmosphereTerrestre.pdf\"><em>https:\/\/deliry.com\/svt\/wp-content\/uploads\/2025\/09\/CH1_1_AtmosphereTerrestre.pdf<\/em><\/a><\/p>\n\n\n\n<p class=\"has-medium-font-size\"><strong>L&rsquo;adaptation a la vie terrestre<\/strong><\/p>\n\n\n\n<p><strong>Comme les\u00a0poissons, les C\u00e9tac\u00e9s ont un\u00a0corps fusel\u00e9\u00a0et une forme\u00a0hydrodynamique\u00a0bien adapt\u00e9e \u00e0 la nage. La transformation de leurs membres ant\u00e9rieurs en\u00a0nageoires\u00a0et la diminution des membres post\u00e9rieurs sont compl\u00e9t\u00e9es par l\u2019effacement des excroissances chez les C\u00e9tac\u00e9s (ils n\u2019ont pas de pavillon de l\u2019oreille, de mamelles, ou d\u2019organes g\u00e9nitaux externes). La disparition presque totale des poils et l\u2019allongement du squelette de la t\u00eate rendent possible la\u00a0respiration en surface\u00a0sans sortir la t\u00eate de l\u2019eau, v\u00e9ritable atout pour les C\u00e9tac\u00e9s. Il y a 36\u00a0millions d\u2019ann\u00e9es, les arch\u00e9oc\u00e8tes donn\u00e8rent naissance aux\u00a0mystic\u00e8tes\u00a0et aux\u00a0odontoc\u00e8tes. Les dents, encore tr\u00e8s diff\u00e9renci\u00e9es chez\u00a0Pakicetus, deviennent peu \u00e0 peu toutes semblables chez les odontoc\u00e8tes bien que les premiers mystic\u00e8tes poss\u00e8dent \u00e9galement des dents. Ces baleines \u00e0 dents ne dispara\u00eetront totalement que vers 25\u00a0millions d\u2019ann\u00e9es pour laisser place aux\u00a0baleines \u00e0 fanons\u00a0que nous connaissons aujourd\u2019hui.<\/strong><\/p>\n\n\n\n<p class=\"has-small-font-size\"><a href=\"https:\/\/www.mnhn.fr\/fr\/la-grande-evolution-des-cetaces-a-la-conquete-des-oceans\"><em>https:\/\/www.mnhn.fr\/fr\/la-grande-evolution-des-cetaces-a-la-conquete-des-oceans<\/em><\/a><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"835\" src=\"https:\/\/deliry.com\/svt\/wp-content\/uploads\/2025\/11\/image-42-1024x835.png\" alt=\"\" class=\"wp-image-1221\" srcset=\"https:\/\/deliry.com\/svt\/wp-content\/uploads\/2025\/11\/image-42-1024x835.png 1024w, https:\/\/deliry.com\/svt\/wp-content\/uploads\/2025\/11\/image-42-300x245.png 300w, https:\/\/deliry.com\/svt\/wp-content\/uploads\/2025\/11\/image-42-768x626.png 768w, https:\/\/deliry.com\/svt\/wp-content\/uploads\/2025\/11\/image-42.png 1100w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\"><a href=\"https:\/\/www.sciencesetavenir.fr\/animaux\/moins-d-animaux-geants-nuit-a-la-fertilite-des-sols_101100\"><em>https:\/\/www.sciencesetavenir.fr\/animaux\/moins-d-animaux-geants-nuit-a-la-fertilite-des-sols_101100<\/em><\/a><\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Sortie des eaux libre de droit- La sortie des eaux repr\u00e9sente l\u2019un des tournants les plus importants de l\u2019histoire de la vie sur Terre. Pendant des centaines de millions d\u2019ann\u00e9es, les oc\u00e9ans ont abrit\u00e9 toutes les formes de vie. Lorsque certaines esp\u00e8ces ont commenc\u00e9 \u00e0 explorer les rivages, elles ont ouvert la voie \u00e0 l\u2019apparition&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"footnotes":""},"class_list":["post-1134","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/deliry.com\/svt\/wp-json\/wp\/v2\/pages\/1134","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/deliry.com\/svt\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/deliry.com\/svt\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/deliry.com\/svt\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/deliry.com\/svt\/wp-json\/wp\/v2\/comments?post=1134"}],"version-history":[{"count":7,"href":"https:\/\/deliry.com\/svt\/wp-json\/wp\/v2\/pages\/1134\/revisions"}],"predecessor-version":[{"id":1225,"href":"https:\/\/deliry.com\/svt\/wp-json\/wp\/v2\/pages\/1134\/revisions\/1225"}],"wp:attachment":[{"href":"https:\/\/deliry.com\/svt\/wp-json\/wp\/v2\/media?parent=1134"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}