The problem was compounded because hominines stayed the same size, with the result that their bigger brains could be achieved only by reducing the size of another organ, the stomach, a trade-off which in turn reduced the efficiency of the digestive tract, which in turn demanded a still better diet. (查看原文)
作者: Geoffrey Barraclough isbn: 0723005346 书名: The Times Atlas of World History 页数: 360 定价: USD 95.00 出版社: Hammond World Atlas Corp 出版年: 1993-9 装帧: Hardcover