Carbon monoxide, a product of furnaces and engines, is a:
acid CO2 kill harm gas form CO 2 HPV
A B C D E F G H
Fuel is burned inside the engine.
Carbon monoxide is a gas produced by furnaces and other engines.
Carbon monoxide, a product of furnaces and engines, is a: (A) acid (B) CO2 (C) kill (D) harm (E) gas (F) form (G) CO 2 (H) HPV