Exercise 3 Fill in the blank with suitable words provided. fire burning plenty oxigent wall paper formation combustion carbon dioxide insufficient supply level There is no doubt, however, that a (1)_ in a con- fined space depletes the oxygen supply to a dangerously low (2). Carbon is present in wood, (3). and plas- tics. Its normal combustion product is (4)_ but carbon monoxide, which is poisonous, forms if there is (5). oxygen. when Wood and paper burn with very little (6). there is (7). Thick smoke and soot (which is car- bon that has not been burned) are produced especially when the (8). of is limited. Smoke irritates nose, eyes, and oxygen the lack of oxygen throat, and, with increasing (9) and the (10)_ death. 1 of carbon monoxide can bring about​