{"id":69,"date":"2022-05-24T23:10:02","date_gmt":"2022-05-24T21:10:02","guid":{"rendered":"http:\/\/actionsciencejargeau.fr\/?page_id=69"},"modified":"2022-07-12T21:53:35","modified_gmt":"2022-07-12T19:53:35","slug":"panneau3","status":"publish","type":"page","link":"https:\/\/actionsciencejargeau.fr\/index.php\/accueil\/cdu\/etape5\/panneau3\/","title":{"rendered":"Explosion de la vie"},"content":{"rendered":"\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-ad2f72ca wp-block-group-is-layout-flex\">\n<div class=\"wp-block-group has-luminous-dusk-gradient-background has-background is-vertical is-layout-flex wp-container-core-group-is-layout-8cf370e7 wp-block-group-is-layout-flex\">\n<div class=\"wp-block-group is-vertical is-layout-flex wp-container-core-group-is-layout-8cf370e7 wp-block-group-is-layout-flex\">\n<figure class=\"wp-block-audio\"><audio controls src=\"http:\/\/actionsciencejargeau.fr\/wp-content\/uploads\/2022\/07\/Et5-3.mp3\"><\/audio><\/figure>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link\" href=\"http:\/\/actionsciencejargeau.fr\/index.php\/accueil\/cdu\/etape5\/panneau2\/\">pr\u00e9c\u00e9dent<\/a><\/div>\n\n\n\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link\" href=\"http:\/\/actionsciencejargeau.fr\/index.php\/accueil\/cdu\/etape6\/panneau1\/\">suivant<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-group has-luminous-dusk-gradient-background has-background is-vertical is-layout-flex wp-container-core-group-is-layout-8cf370e7 wp-block-group-is-layout-flex\">\n<p>Les esp\u00e8ces vivantes \u00e9voluent en s\u2019adaptant sur la surface de la terre.<\/p>\n\n\n\n<p class=\"has-small-font-size\">Cependant, la vie est fragile. Au cours des derniers 500 millions d\u2019ann\u00e9es, 5 catastrophes majeures ont d\u00e9truit la vie sur terre&nbsp;<br>1- L&rsquo;extinction de l&rsquo;Ordovicien qui s&rsquo;est produite il y a de cela 445 millions d&rsquo;ann\u00e9es. suite \u00e0 l\u2019explosion d\u2019une supernova, la Terre a \u00e9t\u00e9 irradi\u00e9 par un intense rayonnement gamma. L\u2019atmosph\u00e8re a \u00e9t\u00e9 d\u00e9truite, entra\u00eenant une chute de la temp\u00e9rature. 70% de la vie des oc\u00e9ans a \u00e9t\u00e9 r\u00e9duite \u00e0 n\u00e9ant<br>2- L&rsquo;extinction du D\u00e9vonien qui s&rsquo;est produite il y a de cela \u00e0 peu pr\u00e8s 385 millions d&rsquo;ann\u00e9es. impacts extraterrestres et forte activit\u00e9 volcanique sous la Sib\u00e9rie, entra\u00eenant une perte de l\u2019oxyg\u00e8ne. 75% des esp\u00e8ces animales disparaissent.<br>3- L&rsquo;extinction du Permien qui s&rsquo;est produite il y a de cela 252 millions d&rsquo;ann\u00e9es. Impact m\u00e9t\u00e9oritique provocant une intense volcanisme. Disparition de 95% des esp\u00e8ces marines et de 70% des esp\u00e8ces terrestres.<br>4- L&rsquo;extinction du Trias-Jurassique qui s&rsquo;est produite il y a de cela 200 millions d&rsquo;ann\u00e9es. collision avec des ast\u00e9ro\u00efdes entra\u00eenant un fort volcanisme. \u00c7a a favoris\u00e9 l\u2019arriv\u00e9e des dinosaures et des mammif\u00e8res. Pr\u00e8s de 20% des esp\u00e8ces marines et une part importante des grands vert\u00e9br\u00e9s terrestres ont disparu.<br>5- L&rsquo;extinction du Cr\u00e9tac\u00e9-tertiaire qui s&rsquo;est produite il y a de cela 65 millions d&rsquo;ann\u00e9es. collision d\u2019un ast\u00e9ro\u00efde de 15 km \u00e0 Chicxulub au Mexique. \u00c7a a entra\u00een\u00e9 la disparition des dinosaures. Aucun animal de plus de 20 \u00e0 25 kg n\u2019aurait surv\u00e9cu \u00e0 l\u2019exception des crocodiliens.<\/p>\n\n\n\n<p class=\"has-small-font-size\">Vers une sixi\u00e8me extinction de masse ? L\u2019extinction de masse humaine.<br>D\u00e9j\u00e0 nous observons une diminution de la biodiversit\u00e9 due \u00e0 l\u2019impact de l\u2019homme.<\/p>\n<\/div>\n<\/div>\n\n\n\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"452\" height=\"859\" src=\"http:\/\/actionsciencejargeau.fr\/wp-content\/uploads\/2022\/07\/image-31.png\" alt=\"\" class=\"wp-image-303\" srcset=\"https:\/\/actionsciencejargeau.fr\/wp-content\/uploads\/2022\/07\/image-31.png 452w, https:\/\/actionsciencejargeau.fr\/wp-content\/uploads\/2022\/07\/image-31-158x300.png 158w\" sizes=\"(max-width: 452px) 100vw, 452px\" \/><\/figure>\n<\/div>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img decoding=\"async\" src=\"http:\/\/actionsciencejargeau.fr\/wp-content\/uploads\/2022\/07\/image-13-1024x504.png\" alt=\"\" class=\"wp-image-212\" width=\"766\" height=\"377\" srcset=\"https:\/\/actionsciencejargeau.fr\/wp-content\/uploads\/2022\/07\/image-13-1024x504.png 1024w, https:\/\/actionsciencejargeau.fr\/wp-content\/uploads\/2022\/07\/image-13-300x148.png 300w, https:\/\/actionsciencejargeau.fr\/wp-content\/uploads\/2022\/07\/image-13-768x378.png 768w, https:\/\/actionsciencejargeau.fr\/wp-content\/uploads\/2022\/07\/image-13-1536x756.png 1536w, https:\/\/actionsciencejargeau.fr\/wp-content\/uploads\/2022\/07\/image-13.png 1920w\" sizes=\"(max-width: 766px) 100vw, 766px\" \/><figcaption>Explosions de la vie et extinctions<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Les esp\u00e8ces vivantes \u00e9voluent en s\u2019adaptant sur la surface de la terre. Cependant, la vie est fragile. Au cours des derniers 500 millions d\u2019ann\u00e9es, 5 catastrophes majeures ont d\u00e9truit la [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"parent":63,"menu_order":3,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-69","page","type-page","status-publish","hentry","entry"],"_links":{"self":[{"href":"https:\/\/actionsciencejargeau.fr\/index.php\/wp-json\/wp\/v2\/pages\/69","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/actionsciencejargeau.fr\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/actionsciencejargeau.fr\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/actionsciencejargeau.fr\/index.php\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/actionsciencejargeau.fr\/index.php\/wp-json\/wp\/v2\/comments?post=69"}],"version-history":[{"count":4,"href":"https:\/\/actionsciencejargeau.fr\/index.php\/wp-json\/wp\/v2\/pages\/69\/revisions"}],"predecessor-version":[{"id":304,"href":"https:\/\/actionsciencejargeau.fr\/index.php\/wp-json\/wp\/v2\/pages\/69\/revisions\/304"}],"up":[{"embeddable":true,"href":"https:\/\/actionsciencejargeau.fr\/index.php\/wp-json\/wp\/v2\/pages\/63"}],"wp:attachment":[{"href":"https:\/\/actionsciencejargeau.fr\/index.php\/wp-json\/wp\/v2\/media?parent=69"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}