(0) FOR years now, scientists have (1) ............ warning us about global warming, patiently explaining how the human race has been producing massive amounts of pollutants (2) ............ the start of the Industrial Revolution. The theory is (3) ............ the amount of carbon dioxide in the air, which is generated as a result of burning fossil fuels, has been increasing. This gas is trapped in the Earth's atmosphere and is heated (4) ............ the sun's rays. This results (5) ............ a gradual increase in global temperature. An increase of even a couple of degrees centigrade could (6) ............ profound effects. Extreme weather events, (7) ............ as hurricanes, flooding and unusually hot or cold seasons have already (8) ............ witnessed.
Use of English PRO
Open Cloze - (B2) First Certificate of English
