How do fossil fuels compare re GHG emissions before combustion?

The actual burning of fuel in cars produces the greatest amount of GHG emissions, I understand, but how does the production of conventional oil, tar sands oil,natural gas, etc compare prior to that point? Is there a phrase we use for this? (i. e.well to tank as opposed to well to tire…something like that. Thanks.



Please signup or login to answer this question.

Sorry,At this time user registration is disabled. We will open registration soon!