Carbon dioxide from burning fossil fuels is a principal greenhouse gas that scientists believe is causing a warming of the earth as it accumulates in the atmosphere.
(Carbon dioxide from burning fossil fuels; is; a principal greenhouse gas that scientists believe is causing a warming of the earth) (scientists; believe; ) (a principal greenhouse gas that scientists believe; is causing; a warming of the earth; T:as it accumulates in the atmosphere) (it; accumulates; L:in the atmosphere)
Carbon dioxide from burning fossil fuels scientists a principal greenhouse gas that scientists believe it
is believe is causing accumulates
a principal greenhouse gas that scientists believe is causing a warming of the earth
a warming of the earth T:as it accumulates in the atmosphere
L:in the atmosphere