Because fats and oils contribute ≈ 87 % of the ALA in the US diet (7), it is apparent that the contribution of
other terrestrial sources is minor.
Not exact matches
Semiletov's work during the 1990s showed, among
other things, that the amount of methane being emitted from
terrestrial sources decreased at higher latitudes.
While ocean models disagree about future carbon uptake rates,
terrestrial models do not even agree about the sign of future carbon exchange, with some showing continued uptake, and
others indicating weakening uptake or even transitioning to
sources.
Unlike
other terrestrial and marine
sources, which gradually release methane as it forms, the shelf is emitting methane that has accumulated in seabed deposits for hundreds of thousands of years and until now was restricted by permafrost, says Shakhova.
The only way you can get around the requirement that the steady - state temperature be such that the energy in from the sun equals the energy out from
terrestrial radiation is to have some
other significant
source of energy.