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An ice-core record of hydrogen reveals that atmospheric levels vary in response to climate change and have increased drastically owing to human activity since the pre-industrial era. The apparent sensitivity of hydrogen cycling to environmental conditions should be considered when projecting the consequences of rising anthropogenic hydrogen emissions in a warming climate.
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第二件事，是中科第五纪在近期接连完成Pre-A及Pre-A+轮融资，两笔交易在一个月之内完成，规模达数亿元。其中，Pre-A轮由红杉中国领投，东方富海跟投；Pre-A+轮由芯能创投、优山资本联合领投，清控金信跟投。
The first ERMA system went into use in 1959. While IBM was the leader in unit