Nevertheless, the combined carbon content and isotope analyses of micro-carbonate in metamorphic rocks can be used to make a distinction in origin between sedimentary and igneous protoliths.

不过，变质岩中微量碳酸盐的碳含量和碳同位素比值分析能够对原岩类型提供有效的判别。

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Contrary to the conventional view that human activities damage the environment, Glaser says, "Black carbon combined with human wastes is responsible for the richness of Terra Preta soils."

与人类活动破坏环境的传统观点相反，格拉泽说：“与人类排泄物结合的黑碳是黑土高地土壤肥沃的原因。”

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The team suggests the loss of trees from the two droughts combined could offset the increases in carbon uptake the forest experienced during the intervening non-drought years.

小组称两场干旱中死去树木会抵消在两场干旱期间森林所增加的碳含量。 这项研究仅仅代表了一种最初的估计具有显著的不确定性，研究者承认道。

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These include Yuri Suzuki, a materials scientist at the University of California, Berkeley, who is building stacks of metal oxides in the hopes that, when combined with carbon-based materials, they'll blend into a new kind of semiconductor that can control spin at normal temperatures.

FORBES: Magazine Article

Methane and carbon emissions combined are less than those emanating from landfills.

WSJ: Grappling With a Garbage Glut

Meanwhile, these lamps combined will equal to carbon emissions of all the motor vehicles in the UK. This can be a bit depressing, but there is some good news.

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