What are rock strata? What is geological technology? What is relief in geology? What is differentiation in planetary geology? What is descriptive mineralogy? Is geology a branch of biology? What is gneiss? What is accretion in geology?
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根据文章第五段 “The fish fossils were discovered at two sites in Chongqing and Guizhou, whose strata (岩层) date back to the Silurian Period that began around 440 million years ago.” (在重庆和贵州的两个 地方发现了鱼化石,这两个地方的岩层可以追溯到志留纪,大概4.4亿年前。 )可知, “atthat...
根据第四段关键句“The fish fossils were discovered at two sites in Chongqing and Guizhou, whose strata (地层) date back to the Silurian Period (志留纪) that began around 440 million years ago.”(这些鱼类化石是在重庆和贵州的两个地点发现的,它们的地层可以追溯到大约4.4亿年前的志留纪。)可知,朱...
Among the salient points in terminology: the concept of "stratification" has been criticized in part because strata have been defined many ways, but a flexible application of the word is central to its utility; the source of nutrients is pivotal in distinguishing epiphytes from parasites, rather...
Military conquests are a form of migration and also a powerful force influencing love and hope in a society. Following conquest both the vanquished and the conquerors show evidence of community effects and strategic growth changes. Conquerors form the dominant social strata, and they usually take ca...
This is what we learned in biology class. But what came before apes? Chinese scientists have discovered fossils (化石) that could enrich the evolutionary story of how humans evolved from fish.(人类是从猿类进化而来的。这是我们在生物课上学到的。但是在猿类出现之前是什么呢?中国科学家发现了化石,...
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Although a majority of biologists are convinced that a mass extinction is underway on earth today, the human history with direct observatory data is too short to predict its future trends. At least five mass extinctions occurred during the Phanerozoic Eon, causing the rapid extinction of at least...
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