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...
1. 本场考试据不完全统计阅读出现了大约六套左右的试卷,而大多数考题在TPO中都出现过类似的话题文章,如Water >话题不仅重复TPO25的The surface of Mars还重复了多期真题话题2019.3.13考的Water and Life >以及The Origin of Coral Reefs话题高度重复TPO48 Coral Reefs。可见对于考生来说,无论考试的新题如何更替,...
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...
origin of coral reefs. If Darwin’s theory was correct, it must be assumed that drilling down through the current atoll reefs would yield layer after layer of reef limestone until, finally, volcanic rock would be encountered. The ability to drill to the base of atoll reefs and resolve the ...
TF183-The Development of Printing 502023-03 2 TF182-The Origin of Coral Reefs 462023-03 3 TF181-Artisans in Sixteenth-Century Europe 232023-03 4 TF180-Birdsong 202023-03 5 TF179-How Soils Formed 522023-03 6 TF178-The Role of Diapause 402023-03 7 TF177-Constraints on Natural Selection ...
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...
Geike, A., 1883. The origin of coral reefs. Nature , 29 , 107–110/124–128.Geikie, Archibald. "The Origins of Coral Reefs, II." Nature (1883).Guppy, H., 1890. The origin of coral reefs. Proceedings of the Victorian Institute 23, 51 - 68....
of the year 1914 in visiting anumber of islands in the Pacific Ocean with the object of testing thevarious theories that have been invented to account for coral reefs.Thirty-five islands, namely, Oahu in Hawaii, eighteen ofthe Fiji group,New Caledonia of which the entire coast line was ...
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...