However, that figure is close to 13 tons for the common Briton and about 21 tons per particular person in America.; The 'typical American normally takes just two or three times to match the annual footprint of the common Nigerian or Malian,he writes.
But carbon footprints are calculated more basically than that. A phrase to start with Utilized in 1999, it only refers back to the weight, normally in tons, of carbon dioxide (CO2) emitted each year because of a selected action.
17. 產品碳足跡 Change lights off when you permit the room and unplug your electronic equipment when they're not in use.}