Question

Carbon dioxide is the main greenhouse gas linked to global warming. Which resources have been linked to producing carbon dioxide?

natural gas and hydroelectric

oil/petroleum and nuclear power

coal and nuclear power

coal and natural gas

im thinking A or D ?

Answer 1

hydroelectric power doesn't produce any appreciable amount of carbon dioxide (except perhaps in the building of the facilities). neither does nuclear (again, except in the building of the facilities).

Answer 2

So im left with D ?

Answer 3

given that A, B, and C all had a resource which haven't been linked to producing carbon dioxide, D does seem like the obvious choice...and burning either coal or natural gas releases carbon dioxide.