<blockquote id="pl83f"><p id="pl83f"></p></blockquote>
<s id="pl83f"><li id="pl83f"></li></s>

      
      
      <sub id="pl83f"><rt id="pl83f"></rt></sub>

        <blockquote id="pl83f"><p id="pl83f"></p></blockquote>
        <sub id="pl83f"><rt id="pl83f"></rt></sub>
        女人的天堂av在线播放,3d动漫精品一区二区三区,伦精品一区二区三区视频,国产成人av在线影院无毒,亚洲成av人片天堂网老年人,最新国产精品剧情在线ss,视频一区无码中出在线,无码国产精品久久一区免费
         
        Ancestors make bread before invention of agriculture: study
                         Source: Xinhua | 2018-07-17 03:39:25 | Editor: huaxia

        Dr. Amaia Arranz-Otaegui and Ali Shakaiteer sampling cereals in Jordan's Shubayqa area. (Credit: Joe Roe)

        WASHINGTON, July 16 (Xinhua) -- Danish and British scientists found that the oldest direct evidence of bread found to date, at least 4,000 years before the advent of agriculture.

        A study published on Monday in the journal Proceedings of the National Academy of Sciences journal Proceedings of the National Academy of Sciences reported the charred remains of a flatbread baked by hunter-gatherers 14,400 years ago at an archaeological site in northeastern Jordan.

        The findings suggest that bread production based on wild cereals may have encouraged hunter-gatherers to cultivate cereals, thus contributing to the agricultural revolution in the Neolithic period.

        A team of researchers from the University of Copenhagen, University College London and University of Cambridge analyzed charred food remains from a Natufian hunter-gatherer site known as Shubayqa 1 located in the Black Desert in northeastern Jordan.

        "The 24 remains analyzed in this study show that wild ancestors of domesticated cereals such as barley, einkorn, and oat had been ground, sieved and kneaded prior to cooking. The remains are very similar to unleavened flatbreads identified at several Neolithic and Roman sites in Europe and Turkey," said Amaia Arranz Otaegui, an archaeobotanist from University of Copenhagen and the first author of the study.

        "So we now know that bread-like products were produced long before the development of farming," said Otaegui.

        According to the researchers, Natufian hunter-gatherers lived through a transitional period when people became more sedentary and their diet began to change.

        "Flint sickle blades as well as ground stone tools found at Natufian sites in the Levant have long led archaeologists to suspect that people had begun to exploit plants in a different and perhaps more effective way," said Tobias Richter from University of Copenhagen who led the excavations.

        "But the flat bread found at Shubayqa 1 is the earliest evidence of bread making recovered so far, and it shows that baking was invented before we had plant cultivation."

        They suggested that the early and extremely time-consuming production of bread based on wild cereals may have been one of the key driving forces behind the later agricultural revolution where wild cereals were cultivated to provide more convenient sources of food.

        Back to Top Close
        Xinhuanet

        Ancestors make bread before invention of agriculture: study

        Source: Xinhua 2018-07-17 03:39:25

        Dr. Amaia Arranz-Otaegui and Ali Shakaiteer sampling cereals in Jordan's Shubayqa area. (Credit: Joe Roe)

        WASHINGTON, July 16 (Xinhua) -- Danish and British scientists found that the oldest direct evidence of bread found to date, at least 4,000 years before the advent of agriculture.

        A study published on Monday in the journal Proceedings of the National Academy of Sciences journal Proceedings of the National Academy of Sciences reported the charred remains of a flatbread baked by hunter-gatherers 14,400 years ago at an archaeological site in northeastern Jordan.

        The findings suggest that bread production based on wild cereals may have encouraged hunter-gatherers to cultivate cereals, thus contributing to the agricultural revolution in the Neolithic period.

        A team of researchers from the University of Copenhagen, University College London and University of Cambridge analyzed charred food remains from a Natufian hunter-gatherer site known as Shubayqa 1 located in the Black Desert in northeastern Jordan.

        "The 24 remains analyzed in this study show that wild ancestors of domesticated cereals such as barley, einkorn, and oat had been ground, sieved and kneaded prior to cooking. The remains are very similar to unleavened flatbreads identified at several Neolithic and Roman sites in Europe and Turkey," said Amaia Arranz Otaegui, an archaeobotanist from University of Copenhagen and the first author of the study.

        "So we now know that bread-like products were produced long before the development of farming," said Otaegui.

        According to the researchers, Natufian hunter-gatherers lived through a transitional period when people became more sedentary and their diet began to change.

        "Flint sickle blades as well as ground stone tools found at Natufian sites in the Levant have long led archaeologists to suspect that people had begun to exploit plants in a different and perhaps more effective way," said Tobias Richter from University of Copenhagen who led the excavations.

        "But the flat bread found at Shubayqa 1 is the earliest evidence of bread making recovered so far, and it shows that baking was invented before we had plant cultivation."

        They suggested that the early and extremely time-consuming production of bread based on wild cereals may have been one of the key driving forces behind the later agricultural revolution where wild cereals were cultivated to provide more convenient sources of food.

        010020070750000000000000011100001373292941
        主站蜘蛛池模板: 九九热在线视频只有精品| 午夜福利电影| 国产在线精品国偷产拍| 人妻日韩精品中文字幕| 精品偷自拍另类精品在线| 四虎库影成人在线播放| 国产内射性高湖| 免费人成视频在线| 性欧美精品xxxx| 成人拍拍拍无遮挡免费视频| 少妇搡bbbb搡| 亚洲男人第一无码av网站| 秋霞国产av一区二区三区| 国产精品日韩av一区二区| 无码人妻精品一区二区三区蜜桃 | 特级无码毛片免费视频尤物| 九九视频热最新在线视频| 无码人妻少妇久久中文字幕蜜桃 | 亚洲国产成人综合自在线| 国产自在自线午夜精品| 亚洲成人精品一区二区中| 日韩大片一区二区三区| 久久综合亚洲色一区二区三区| 成人午夜在线观看刺激| 波多野结衣一区二区三区88| 97久久综合亚洲色hezyo| 色窝窝无码一区二区三区| 精品亚洲香蕉久久综合网| 天堂а√在线中文在线| 亚洲一区精品视频在线 | 中文字幕在线国产有码| 精品中文人妻在线不卡| 国产精品尤物在线| 日本不卡片一区二区三区| 9l久久午夜精品一区二区| 国产亚洲一区二区三区av| 青青草视频免费观看| 日本黄色一区二区三区四区 | 无码成人午夜在线观看| 亚洲超清无码制服丝袜无广告| 色噜噜亚洲男人的天堂|