阅读理解(1).What does O2 mean in Chinese? A. 二氧化碳 B. 钾 C.氧气 D.氮气(2).What is in leaves? A. Energy B. O2 C. Chlorophyll D. CO2 (3).What can photosynthesis(光合作用) produce for living things? A. Sugar B.O2 C. CO2 D. A and B(4).How can we get more O2 acco...
解析 does; mean【答案】does; mean【核心短语/词汇】sign:标志【翻译】这个标志是什么意思?【解析】根据题干要求,保持原句意思。原句是一个what引导的特殊疑问句,动词是is,其同义句转换成由do/does引导的一般疑问句,主语是this sign,助动词用does,后接动词原形mean,故答案为does; mean。
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根据第三段中Thesecondary footprint is a measure of the indirect CO2 emissions from the wholelifecycle of products we use — those related to their production andbreakdown.(第二种碳足迹是对我们使用的产品在整个生命周期内的间接二氧化碳排放的测量,这些二氧化碳排放与产品的生产和分解有关) 可知,第二种碳...
Studies of respiratory gas tensions commonly rely on assessments of steady-state mean values. In making such assessments, variance is assumed to be the result of random fluctuation or noise of ill-defined origin. However, the existence of time-dependent changes in minute volume, which would be ...
An overview of recommerce, why it's important, and how top brands are leveraging buyback, trade-in, and upcycling programs to improve their sustainability efforts.
CO2 molecules. Though DAC is a particularly expensive carbon removal method, according to the International Energy Agency (IEA), 27 DAC plants were commissioned worldwide as of July 2023.5Continued innovation in carbon removal is being supported by government programs such as the Carbon Negative Shot...
What does weighted average mean and how is it different from a simple average? A weighted average assigns weights to each data point according to its importance before calculating the average. In contrast, a simple average treats all data points equally. For example, if you're calculating a st...
So, why does it matter if there’s more CO2 in the atmosphere? Don’t worry, we’re not going to go all “Bill Nye” on you. Long story short, CO2 is one of the greenhouse gases that absorbs radiation and prevents heat from escaping our atmosphere. This excess heat creates disrupted...
Re: what does "CS" mean? « Reply #4 on: June 15, 2012, 03:33:00 AM » Quote from: Jorriss on June 15, 2012, 02:38:42 AM Who said deltaS is positive for those reactions? Nobody said that. Quote They definitely are not all positive. And that's what the question is abou...