Thus, out of the 190 total carbon and nitrogen substrates, archival strain 1601 differed from 2004 in 86 (45%) of the tests.

In this process, small portions of organic trace gases (total organic carbon) are formed as well.

In Canada's boreal forests as much as 80% of the total carbon is stored in the soils as dead organic matter.

The total carbon emission offsets are determined for a project by subtracting the carbon emissions before and after the energy loan was provided.

Most anoxic events are recognized using the C isotope as a proxy to indicate total organic carbon preserved in sedimentary rocks.

Up to 30% of the total carbon stored in soils is contributed by black carbon.

Researchers at the Land Institute estimate annual crops cause the loss of about 40 percent of the total carbon in the soil.

But state officials did find elevated levels of total organic carbon in some samples of tap water.

In total carbon monoxide poisoning was responsible for 43.9% of deaths by poisoning in that country.

These are large amounts, for comparison the total carbon in the atmosphere is around 700 gigatons.