搜索结果: 1-15 共查到“国际动态 人口学原理”相关记录30条 . 查询时间(0.609 秒)
![](http://www.firstlight.cn/upload/imgfile/201412/1/2014121112742575.jpg)
Durham, NC - In a long-term study of interactions between chimpanzees in the famous Gombe National Park in Tanzania, researchers have found that males who consistently bully females tend to father mor...
![](http://www.firstlight.cn/upload/imgfile/201412/1/2014121161649919.jpg)
Choosing between two good things can be tough. When animals must decide between feeding and mating, it can get even trickier. In a discovery that might ring true even for some humans, researchers have...