托福阅读真题第182篇TheOriginofCoralReefs(答案文章最后) The Origin of Coral Reefs Paragraph 1:Coral reefs are natural structures formed from deposits of the calcium carbonate secretions of coral, a marine animal that lives in colonies. In general, coral reefs are grouped into one of three categor...
in the years after the development of Darwin’s theory other explanations were offered, and the whole concept of the origin of atolls became embroiled in the controversy over the origin of coral reefs. If Darwin’s theory was correct, it must be assumed that drilling down through the...
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Since the current surface features of atolls give no evidence of a volcanic base, in the years after the development of Darwin’s theory other explanations were offered, and the whole concept of the origin of atolls became embroiled in the controversy over the origin of coral reefs. If Darwin...
Since the current surface features of atolls give no evidence of a volcanic base, in the years after the development of Darwin’s theory other explanations were offered, and the whole concept of the origin of atolls became embroiled in the controversy over the origin of coral reefs. If Darwin...
The Origin of Coral Reefs Paragraph 1: Coral reefs are natural structures formed from deposits of the calcium carbonate secretions of coral, a marine animal that lives in colonies. In general, coral reefs are grouped into one of three categories, atolls, barrier reefs, and fringing reefs. Atoll...
As a consequence of the elevation, a portion of the sea-bottom was brought well up into the waters of the Gulf Stream, which were probably shifted a little eastward.ARCH.KNatureGeike, A., 1883. The origin of coral reefs. Nature , 29 , 107–110/124–128....
英文版题目私信即可。 The Origin of Coral Reefs Paragraph 1: Coral reefs are natural structures formed from deposits of the calcium carbonate secretions of coral, a marine animal that lives in colonies. In general, coral reefs are grouped into one of thr
The occurrences bear directly on the subsidence theory for the origin of coral reefs, as they suggest that the overall history of subsidence was interrupted by periods of emergence. In the past, many atolls may have served as high ... HS Ladd - 《Journal of Paleontology》 被引量: 105发表...
already been printed as part of a doctor'sthesis submitted by Earl B. Millard to the Graduate School of theUniversityof Illinois.Washburn, J. Amer. Chem. Soc., 31, 322 (1909).2 Buckb6ck, Zs. physik. Chem., 55, 563(1906)THE ORIGIN OF CORAL REEFSBy W. M. DavisDEPARTMENT OF ...