A carbon footprint can also be calculated using the same input-output method described above, and for consistency and to benefit from the advantages listed the same technique is applied.
Mae’n bosib cyfrifo ôl troed carbon hefyd gan ddefnyddio’r un dull mewnbwn ac allbwn ag a ddisgrifir uchod, a defnyddir yr un dechneg er mwyn sicrhau cysondeb ac elwa ar y manteision a restrwyd.