Either way, the theory provided a concise explanation of how thick sequences of shallow-water rocks could accumulate, but was vague on the question of how they were transformed into mountain belts. 4.Why does the author mention “Darwin's theory of evolution” in the passage? A. To expl...
In 1835, before he had developed his theory of evolution, Charles Darwin collected specimens of 13 previously unknown species of finches from the isolated Galapagos Islands. The Galapagos finches closely resembled a species of finches living on the mainland of South America, but each of the Galapag...
1.In 1835, before he had developed his theory of evolution, Charles Darwin collected specimens of 13 previously unknown species of finches from the isolated Galapagos Islands. The Galapagos finches closely resembled a species of finches living on the mainland of South America, but each of the Gal...
as noted by Charles Darwin in the nineteenth century, may be a universal sign of anger.As the originator of the theory of evolution, Darwin believed that the universal recognition of facial expressions would have survival value.For example, facial expressions could signal the approach of enemies ...
A. 错误,文章指出中型地雀主要在湿年时吃小而嫩的种子,而不是因为小种子缺乏足够的营养才吃大而干的种子。