曰韩免费_91久久精品国产亚洲_一区二区成人影院_九一视频在线免费观看_91国视频_亚洲成人中文在线

2023考研阅读资料经典美文32

雕龙文库 分享 时间: 收藏本文

2023考研阅读资料经典美文32

  32 Botany

  Botany, the study of plants, occupies a peculiar position in the history of human knowledge. For many thousands of years it was the one field of awareness about which humans had anything more than the vaguest of insights. It is impossible to know today just what our Stone Age ancestors knew about plants, but form what we can observe of pre-industrial societies that still exist a detailed learning of plants and their properties must be extremely ancient. This is logical. Plants are the basis of the food pyramid for all living things even for other plants. They have always been enormously important to the welfare of people not only for food, but also for clothing, weapons, tools, dyes, medicines, shelter, and a great many other purposes. Tribes living today in the jungles of the Amazon recognize literally hundreds of plants and know many properties of each. To them, botany, as such, has no name and is probably not even recognized as a special branch of knowledge at all.

  Unfortunately, the more industrialized we become the farther away we move from direct contact with plants, and the less distinct our knowledge of botany grows. Yet everyone comes unconsciously on an amazing amount of botanical knowledge, and few people will fail to recognize a rose, an apple, or an orchid. When our Neolithic ancestors, living in the Middle East about 10,000 years ago, discovered that certain grasses could be harvested and their seeds planted for richer yields the next season the first great step in a new association of plants and humans was taken. Grains were discovered and from them flowed the marvel of agriculture: cultivated crops. From then on, humans would increasingly take their living from the controlled production of a few plants, rather than getting a little here and a little there from many varieties that grew wild- and the accumulated knowledge of tens of thousands of years of experience and intimacy with plants in the wild would begin to fade away.

  

  32 Botany

  Botany, the study of plants, occupies a peculiar position in the history of human knowledge. For many thousands of years it was the one field of awareness about which humans had anything more than the vaguest of insights. It is impossible to know today just what our Stone Age ancestors knew about plants, but form what we can observe of pre-industrial societies that still exist a detailed learning of plants and their properties must be extremely ancient. This is logical. Plants are the basis of the food pyramid for all living things even for other plants. They have always been enormously important to the welfare of people not only for food, but also for clothing, weapons, tools, dyes, medicines, shelter, and a great many other purposes. Tribes living today in the jungles of the Amazon recognize literally hundreds of plants and know many properties of each. To them, botany, as such, has no name and is probably not even recognized as a special branch of knowledge at all.

  Unfortunately, the more industrialized we become the farther away we move from direct contact with plants, and the less distinct our knowledge of botany grows. Yet everyone comes unconsciously on an amazing amount of botanical knowledge, and few people will fail to recognize a rose, an apple, or an orchid. When our Neolithic ancestors, living in the Middle East about 10,000 years ago, discovered that certain grasses could be harvested and their seeds planted for richer yields the next season the first great step in a new association of plants and humans was taken. Grains were discovered and from them flowed the marvel of agriculture: cultivated crops. From then on, humans would increasingly take their living from the controlled production of a few plants, rather than getting a little here and a little there from many varieties that grew wild- and the accumulated knowledge of tens of thousands of years of experience and intimacy with plants in the wild would begin to fade away.

  

主站蜘蛛池模板: 久久精品日日躁夜夜躁欧美 | 日本免费视频 | 99久久免费精品国产免费高清 | 偷拍自怕在线视频免费 | 国产精品后入内射日本在线观看 | 99手机在线视频 | 亚洲欧洲无卡二区视頻 | 日本一级毛片片免费观看 | 亚洲一区二区三区久久久久 | 精品在线观看视频 | 亚洲精品一区二区三区婷婷月 | 黄色片免费看看 | 人人夜 | 中文无码日韩欧免费视频 | 欧美啊v | 天堂资源在线中文 | 久久午夜电影 | 在线中文字幕精品b | 久久99网 | 天天综合亚洲色在线精品 | 中文字幕不卡在线播放 | 国产三级无码内射在线看 | 久久久高清免费视频 | 国产一区精品 | 色一乱一伦一图一区二区精品 | 黄动漫视频网站 | 成人快色| 看免费一级毛片 | 日本xxxx色视频在线观看免费 | 国产精品亚洲а∨无码播放不卡 | 精品性高朝久久久久久久 | 久久精品99无色码中文字幕 | 成人免费手机在线看网站 | 国产网址在线 | 亚洲av无码专区亚洲av桃 | 影音先锋人妻啪啪av资源网站 | 欧美视频二区欧美影视 | 被三个男人绑着躁我好爽视频 | 亚洲精品久久久av无码专区 | 亚洲一区二区三区四区五区六区 | 久久亚洲精品国产亚洲老地址 |