Another gas associated with the spread of agriculture is methane.

另一种与农业扩张有关的气体是甲烷。

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But a key obstacle to reduce the amount of gas flared is the lack of infrastructure and available markets for the associated gas.

然而，减少天然气燃除的一个主要障碍是缺乏利用伴生气所需要的基础设施和现有市场。

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Iraq has struggled for years with power blackouts and risks years of electricity shortages until associated gas from oilfields is captured and fed to new power plants.

伊拉克一直在努力多年，直到从油田相关气体捕获和美联储新电厂停电和电力短缺的风险年。

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Another problem is that the RSPO has struggled to create any effective action on setting standards for greenhouse-gas emissions associated with palm-oil plantations.

ECONOMIST: The campaign against palm oil

But coal mining and combustion produces health and environmental risks that dwarf those associated with natural-gas production.

WSJ: Should Fracking Be Regulated by the Feds or the States?

As well as animal welfare concerns over rearing large numbers of farm animals in close proximity, the water use, farmland for animal feed, waste and greenhouse-gas emissions associated with meat production make it one of the most significant environmental problems in the world today.

CNN: Lab-grown meat gives food for thought