Many scientists are worried about global warming. The consequences could be serious. If all the ice in the Arctic and Antarctic regions 1 MELTED, sea levels 2 WOULD RISE and cause terrible floods. If sea levels 3 ROSE, people living in coastal areas 4 WOULD LOSE their homes. The melting ice would also affect the temperature of the sea. If the sea 5 GOT colder, the northern half of the world 6 WOULD FREEZE. There would be terrible snow storms and millions of people 7 WOULD DIE.
