单词 | nitrogen fixation |
释义 | nitrogen fixation (once / 347627 pages) n WORD FAMILY nitrogen fixation USAGE EXAMPLESLast year, Buick published evidence that biological nitrogen fixation was already well established half a billion years before these Pilbara basalts erupted. Science Magazine(May 09, 2016) Those low levels, it suggests, are likely because we are now observing the remnants of ancient nitrogen fixation amid changed atmospheric conditions. The Verge(Mar 24, 2015) The process that makes nitrogen easier for organisms to use, called nitrogen fixation, did not emerge until 2 billion years ago. Time(Feb 17, 2015) n the assimilation of atmospheric nitrogen by soil bacteria and its release for plant use on the death of the bacteria Hyper biological process, organic process a process occurring in living organisms |
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