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Earth's Timeline

Earth's Timeline
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In Charted Waters - Evolution of the World Map as it was Explored Maps are among the most accessible assets we can use accurately, whether it’s an old print or the newest mobile app. Still, it took centuries for people to truly understand the geography of the world. Here, we show how our knowledge has grown and developed over time… Scroll to begin the journey Atlantic Ocean Mediterranean Sea Black Sea Britain Thailand Cambodia Sumatra Java China NorthAmerica Africa Indian Ocean Uzbekistan Azores CapeVerdeIslands Cape ofGood Hope The Bahamas Cuba Haiti DominicanRepublic VirginIslands EastAfrica Trinidad SouthAmerica Madagascar Philippines PapuaNewGuinea PacificOcean Japan Siberia Antarctica CapeYork Tasmania NewZealand Australia Carthaginians reach the Atlantic Oceanfor the first time. Herodotus prefaces his Histories with a description of the lands known to him. Britain appears forthe first time on a map. Western traders reach Thailand, Cambodia, Sumatra and Java, as well as China. Approximate date for the Viking discoveries of America for which they had different names.

Les abeilles se sont déjà éteintes, en même temps que les dinosaures Les dinosaures ne sont pas les seuls à s’être éteints il y a près de 65 millions d’années: les abeilles aussi —enfin, presque. Selon une étude de l’Université du New Hampshire (UNH) publiée le 24 octobre, elles auraient quasiment disparu à la fin de la période crétacée. Comme nous l’apprend le site de l’université, «les études précédentes suggéraient une extinction généralisée des plantes à fleurs durant cette période, et on a longtemps supposé que les abeilles, qui dépendaient de ces plantes, avaient connu le même destin. Malheureusement, contrairement aux dinosaures, il existe peu de traces de fossiles d’abeilles». publicité Ce qui rendait la confirmation d’une telle extinction difficile. «Les données indiquaient qu’un événement majeur s’était produit au même moment pour quatre groupes différents d’abeilles. Selon l’auteure, cette découverte pourrait permettre d’éclairer l’actuelle disparition des abeilles: De nombreuses hypothèses ont tenté d’expliquer ce phénomène.

BBC Nature - History of life on Earth Timeline Timeline of Art History - Skip to primary content Skip to secondary content Having trouble viewing this page? Click here for a printer-friendly version. FacebookTwitterPinterestTumblrShare Email This Page AddToAny Cycle de Calvin Un article de Wikipédia, l'encyclopédie libre. Pour les articles homonymes, voir Calvin. Le cycle de Calvin (aussi connu comme le cycle de Calvin-Benson) est une série de réactions biochimiques prenant place dans le stroma des chloroplastes des organismes photosynthétiques. Il a été découvert par Melvin Calvin et Andy Benson à l’université de Californie à Berkeley. Durant la photosynthèse, l’énergie de la lumière a été convertie en énergie chimique conservée dans l’ATP et le NADPH. Le cycle de Calvin, indépendant de la lumière, utilise l’énergie de ces transporteurs à courte vie pour transformer le dioxyde de carbone en composés organiques qui peuvent être utilisés par l’organisme. La somme totale des réactions du cycle de Calvin est : 6 CO2 + 24 NADPH + 18 ATP → C6H12O6 + 6 H2O + 24 NADP+ + 18 ADP + 18 Pi Réactions dans le cycle de Calvin[modifier | modifier le code] Cycle de Calvin, vue des trois étapes : fixation du dioxyde de carbone, réduction et régénération du ribulose.

The oldest land plants (1) Fossils tell the story About fourhundred and fifty million years ago, at the end of the Ordovician and in the beginning of the Silurian, the land was desolate and empty. Barren, hardly wethered rockgrounds, empty sand-, gravel- and clayplains, no green. The oldest indications for the existence of real land plants have been found in cores from boreholes in Oman. Cooksonia The first fossils of macroscopic land plants have been found in the Middle Silurian of Ireland. more common and also more complete. The evolution from algae to land plants must have been a lengthy process. Another problem for land plants is that they miss the upward force of the water. Species of Cooksonia are found at several places on earth, e.g. in Wales, Scotland, England, Czechia and Canada. Baragwanathia A plant, almost as old as Cooksonia, is Baragwanathia longifolia. Enigmatic plants At the time of the first Cooksonias a completely different group of plants has evolved, which tried to colonize the land.

Approved by Good Housekeepingand Ladies’ Home Journal Gung Hay Fat Choy! Designer/illustrator Craig Frazier commemorated the “Year of the Horse” with this poster. Lettering Large Monumental typography is the latest book on environmental design by Steven Heller and Mirko Ilić. Pretty Pictures A beautiful monograph of the work of Canadian artist Marian Bantjes created between 2003–2012. Sunbeam Rd. Music and graphics by Brick designer Clive Hacker, the new Breathers LP is out in 12” vinyl and digital download. Shadow Type The latest typographic book by Steve Heller and Louise Fili. Puffin Chalk "Chalk Queen", Dana Tanamachi, illustrated and hand lettered a series of gorgeous covers for classic stories published by Puffin Books. Deceptive Practice Showing around the U.S. a documentary that highlights the astounding visual magic of Ricky Jay. Boston Marathon Tribute The May cover of Boston Magazine, photographed by Mitchell Feinberg, needs no words to explain. A 20th Century Look at Environmental Design Graphic Art & Design Annual 11–12 SFMTA Rebrand @issue

Holocaust Timeline Jump to: 1938 1939 1940 1941 1942 1943 1944 1945 1933 January 30, 1933 - Adolf Hitler is appointed Chancellor of Germany a nation with a Jewish population of 566,000. February 22, 1933 - 40,000 SA and SS men are sworn in as auxiliary police. February 27, 1933 - Nazis burn Reichstag building to create crisis atmosphere. February 28, 1933 - Emergency powers granted to Hitler as a result of the Reichstag fire. Terms of use: Private home/school non-commercial, non-Internet re-usage only is allowed of any text, graphics, photos, audio clips, other electronic files or materials from The History Place.

Soil Biogeochemistry

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