<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: 国产日韩综合av在线| 91精品人妻中文字幕色| 国产精品原创不卡在线| 1精品啪国产在线观看免费牛牛| 国产午夜福利在线视频| 亚洲欧美日韩国产四季一区二区三区 | 亚洲人成人网站色www| 国产亚洲精品AA片在线爽| 亚洲欧洲无码AV电影在线观看| 亚洲精品一区二区二三区| 四虎成人精品无码| 天天躁夜夜躁天干天干2020| 在线观看AV永久免费| 日韩亚洲欧美中文高清在线| 亚洲国产良家在线观看| 伊人久久精品亚洲午夜| 一本av高清一区二区三区| 久久精品av一区二区三| 激情在线一区二区三区视频| 欧美日本精品一本二本三区| 极品美女自拍偷精品视频| 97se综合| 国产精品护士| 粉嫩少妇内射浓精videos| 国内不卡的一区二区三区| 亚洲AV国产福利精品在现观看| 成人午夜在线观看日韩| 人妻中文字幕亚洲精品| 97人妻碰碰视频免费上线| 国产一区二区不卡在线视频| 无码精品一区二区免费AV| 丰满高跟丝袜老熟女久久| 亚洲欧洲日产国码久在线| 亚洲精品国产综合久久一线| 综合激情丁香久久狠狠| 久久96热在精品国产高清| 无码小电影在线观看网站免费| 不卡国产一区二区三区| 欧美黑人XXXX性高清版| 日韩一区二区在线看精品| 亚洲欧美国产日韩天堂区|