Carbon dating article for middle school

In places wehere the ground is bare - from overgrazing or from the common practice of leaving fields unplanted for part of the year - photosynthesis stops. Lal calculates that land use changes such as these have stripped 70 billion to 100 billion tons of carbon from the world's soils and pumped it into the earth's atmosphere, oceans, and lakes since the dawn of agriculture. - Geography Trivia / Ireland - "The shape and landscape of present-day Ireland—an island of 27,100 square miles [70,200 square kilometers]—were formed 10,000 years ago when Atlantic Ocean glaciers slowly began their retreat.

Today agriculture and other land-use changes account for about a third of global greenhouse gas emissions. The event left the country rich with the soil that has nurtured Ireland's flora and fauna for centuries, and which offered a hospitable environment for migrating people to settle and plant seeds."- First Nations people / Canada - "Archaeologists have found evidence that proves First Nations people were in New Brunswick more than 10,000 years ago.

[....]" - "Traditional date when the continent of Atlantis sank beneath the waves. and is perhaps the oldest continuously occupied city on Earth." 9,000 B. - Tools / North America - "The Wenachee site, dated to 11,000 B. and located in the Inner Columbia River Basin, presents evidence of a new assemblage of stone tools in the Americas at their earliest known horizon." [Links: 1 - # 5]), has been identified genetically in southeastern Turkey, according to a report in the journal Science. article (Fossils show ancient use of chili peppers [about 6,100 years ago]), p. Typologically, the language of Sumer resembles Chinese, which suggests an eastern origin.

Researchers probing the ocean bottom have found 18-story-high towers of stone deep in the ocean near a section of volcanic fault ridges that extend for 6,200 miles along the Atlantic Ocean floor."9,000 B. - Jericho Settlement - "This city, located near a permanent spring a few miles west of the Jordan River was excavated by Kathleen Kenyon. Manfred Heun of the Agricultural University of Norway, along with Norwegian, German, and Italian colleagues, examined the DNA of 68 lines of cultivated einkorn (Triticum monococcum monococcum), 194 lines of wild einkorn (T. boeoticum) from nine geographical regions within the Fertile Crescent, and nine lines of a weedy einkorn (T. aegilopoides) found in the Balkans." - Fig Cultivation / Middle East - "[....] In the Middle East, figs were domesticated 11,400 years ago. In the New World, corn was being cultivated 9,000 years ago. Some scholars have proposed that the Sumerians came by ship, landing on the north shore of the Persian Gulf.' " 8,000 B. - Florida Indians - "Florida's Aucilla River is yielding evidence of the adaptability of Paleoindians to their changing environment at the end of the Pleistocene, 10,000 years ago.

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- Wiki Trivia - "The 9th millennium BC marks the beginning of the Neolithic period. [NP] Pottery became widespread (with independent development in Central America) and animal husbandry (pastoralism) spread to Africa and Eurasia. [....]"[....] Professor Dinesh Agrawal of Penn State University reviewed the evidence from a variety of sources and estimated the dates as follows: 1. These are the "bog bodies." The individual bog bodies show a great degree of variation in their state of preservation, from skeletons, to well-preserved complete bodies, to isolated heads and limbs.

7000 BC; the Sivaliks and the Potwar (Pakistan) region also exhibit many vertebrate fossil remains and paleolithic tools. 16-17] - [First published by Times Books (as The Times Compact Atlas of World History) 1995 - updated and reprinted 2002] *Trivia: "If Ohio State University soil scientist Rattan Lal is right, one of the simplest solutions to climate change may be right under our feet.

[....] Suttie said they have found some material in the campsite that came from central Maine. - Human Occupation / South America - "The altiplano of Peru and Bolivia appears at first sight to be a very inhospitable land.

There were indications of settlement after 9,000 B. For a decade, researchers from the Florida Museum of Natural History have been excavating the Page-Ladson site, and this past fall [1996] they uncovered the ground surface of a Paleoindian habitation at a depth of 15 feet.

These are: Pluto [250 years], Neptune [165 years], Uranus [84 years], Saturn [28 years] and Jupiter [12 years]." - Wiki Trivia - "In the 8th millennium BC, agriculture became widely practised in the Fertile Crescent and Anatolia. Decline of Indus and Saraswati Civilization - 2200-1900 BC; 6. Period of evolution of syncretic Hindu culture - 1400-250 BC [....] 8,000 B. - Bog Bodies - "Over the past centuries, remains of many hundreds of people - men, women, and children - have come to light during peat cutting activities in northwestern Europe, especially in Ireland, Great Britain, the Netherlands, northern Germany, and Denmark.

When humans started draining and plowing up the natural topsoil for planting, they exposed the buried carbon to oxygen, creating carbon dioxide and releasing it into the air.

Animal husbandry made things worse, as domesticated animals began grazing grasslands down to the earth.

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