What kind of fuel use adds the most to global warming?
elbow grease vehicles fossil Pollution engines Cars hydroelectricity solar energy
A B C D E F G H
Global warming is caused by carbon dioxide trapped in the atmosphere.
Burning fossil fuels increases global warming.
What kind of fuel use adds the most to global warming? (A) elbow grease (B) vehicles (C) fossil (D) Pollution (E) engines (F) Cars (G) hydroelectricity (H) solar energy