52 Chimpanzee
The most striking single fact about chimpanzees is the flexibility of their social life, the lack of any rigid form of organization. It represents about as far a departure from the baboon type of organization as one can find among the higher primates, and serves to emphasize the great variety of primate adaptations. Chimpanzees are more human than baboons, or rather they jibe better with the way we like to picture ourselves, as free-wheeling individuals who tend to be unpredictable, do not take readily to any form of regimentation, and are frequently charming. Two researchers have described what they found during more than eight months spent among chimpanzees in their natural habitat the forest: We were quite surprised to observe that there is no single distinct social unit in chimpanzee society. Not only is there no family or harem organization; neither is there a troop organization - that is to say, no particular chimpanzees keep permanently together. On the contrary, individuals move about at will, alone or in small groups best described as bands, which sometimes form into large aggregations. They leave their associates if they want to, and join up with new ones without conflict. The general practice is best described as easy come, easy go , although there are certain group-forming tendencies. As a rule chimpanzees move about in one of four types of band: adult males only; mothers and offspring and occasionally a few other females; adults and adolescents of both sexes, but no mothers with young and representatives of all categories mixed together. The composition of bands may change a number of times during the course of a day as individuals wander off and groups split or combine with other groups. On the other hand, certain individuals prefer one anothers company. One of the researchers observed that four males often roamed together over a four-month period, and mothers often associated with their older offsprings.
2017年高考英语二轮专题复习命题预测88
老外在中国:我的蝎子叫哈罗德
2017年高考英语二轮专题复习命题预测49
最适合理科生和工科生的好工作TOP 10 !
毕马威调查显示 上海将在未来成为新硅谷
常看色情影片 男性易对恋爱关系不满足
国内英语资讯:Myanmar president pledges efforts in Belt and Road Initiative
国内英语资讯:Xi returns after visit to Finland, meeting with Trump in Florida
国内英语资讯:Xi says ready to boost China-U.S. ties from new starting point with Trump
华为诉三星专利侵权案一审胜诉
国际英语资讯:Britain, EU can get Brexit deal that works for both sides: foreign secretary
Filtering sea water and bike scheme in China 过滤海水、中国自行车租赁计划
外媒看中国:中国最值钱的品牌们,腾讯第一
2017年高考英语二轮专题复习命题预测91
国内英语资讯:Spotlight: Xis visit to Finland, meeting with Trump uphold dialogue, cooperation, mutual b
2017年高考英语二轮专题复习命题预测92
2017年高考英语二轮专题复习命题预测79
古埃及有哪些奇葩的文化传统?
《神奇动物在哪里》电影精讲(视频)
国际英语资讯:S.Korean presidential rivals having close race 1 month before election
2017年高考英语二轮专题复习命题预测94
2017年高考英语二轮专题复习命题预测93
国际英语资讯:Xi, Trump pledge to expand win-win cooperation, manage differences
英语美文:贫穷或富有?只是个视角问题
美政府共向恐怖主义受害者支付数亿美元赔偿
2017年高考英语二轮专题复习命题预测85
国际英语资讯:At least 6 killed, scores injured in gun attacks near South Sudan capital
2017年高考英语二轮专题复习命题预测82
2017年高考英语二轮专题复习命题预测86
2017年高考英语二轮专题复习命题预测83
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |