流行
发表于 2025-3-27 00:59:34
Dating and Chronology,er and that the depth of the sediments indicated a probable age of thousands of years. A numerical value was not forthcoming, however, for another two millennia, when in 1854 the foundation of the statue of Ramses II at Memphis was found to be buried under 9 feet of sediment. Historical records prov
induct
发表于 2025-3-27 03:37:45
The Paleontological Record, space. We shall therefore begin our examination of the past by reviewing what we know about extraterrestrial lipids and other compounds. Early in the present century spectroscopic examination of light reaching our planet revealed that about 99% of the matter of the universe is in the nuclear form c
chapel
发表于 2025-3-27 09:19:31
The Temperature and pH Problem,t, the primitive surface of our planet is sometimes also thought to have been hot. Whether or not it actually was is another matter, about which geologists do not agree today. The origin of both our planet and the other planets is much more speculative than frequently supposed, and the complexity of
星球的光亮度
发表于 2025-3-27 11:49:21
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Substitution
发表于 2025-3-27 14:26:37
Phylogenetics and Biosynthesis,lsewhere (Nes, 1977; Nes and McKean, 1977). However, epoxysqualene is not always cyclized to the same substance. Two major products (lanosterol and cycloartenol) are formed, and they are never known to be produced by cyclization in the same organism, whether the latter is unicellular or highly diffe
FRET
发表于 2025-3-27 21:20:37
Conclusions, given cell at a given time. Function seems to be one of the more important of these, and there is reason to believe that the idea of function cannot be isolated from environmental considerations. The various forces that seem to be operating have been discussed in connection with specific details. T
flimsy
发表于 2025-3-28 01:25:04
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抛射物
发表于 2025-3-28 05:43:53
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放大
发表于 2025-3-28 08:47:35
Klassische Wachstumstheorie und Entwicklungraly ‘burst’ and then regress. In this paper we provide a number of examples of invasion and of control mechanisms (climatic, edaphic, biological, human). Some ‘mysterious’ patterns of distribution and some no less mysterious disappearances are addressed..Plant invasion in Northern Africa is concern
Alienated
发表于 2025-3-28 10:32:02
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