Are the sentences true or false? Correct the false sentences.

a) True. By 2050 most people will live in cities. b) True. There will be approximately 5 billion more people in the world. c) False. If sea levels rise, towns and cities on the coast will face problems. Corrected sentence: "Towns and cities on the coast will not be OK if sea levels rise." d) True. Life on Earth will be very difficult if there is no fresh water. e) False. It will be warm enough to swim in the North Sea. Corrected sentence: "It will not be too cold to swim in the North Sea."