Which of the following is the disadvantage of nitrogen, which can be used as carrier gas in gas chromatography?

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#Question id: 12581

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Which of the following causes an increase in the intensity of UV radiation reaching the Earth? 

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#Question id: 12582

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Which of  the  following  describes carbon dioxide,  methane, and  water  vapor re-reflecting infrared radiation back toward Earth?

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#Question id: 12583

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Which of the following is caused by excessive nutrient runoff into lakes?  

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#Question id: 12584

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Which of the following causes excessively high levels of toxic chemicals in fish-eating birds? 

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#Question id: 12585

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Agricultural lands frequently require nutritional supplementation because

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#Question id: 12668

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What will be the effect of  water deficit condition in the plant cell?