3 Read the text again. Choose the correct answers. 1 In 2050, there will be _ billion more people living on Earth. a ten b three c seven 2 Agriculture has destroyed a lot of - a prairies, forests and steppes b grasslands in South America c forests in Central Asia 3 Most vertical farms will be in a buildings in towns and cities b forests around the world c underground laboratories 4 Some of the advantages of genetically modified plants are that they - a have bigger seeds and can grow faster. b don't need much fertiliser or pesticides. c can grow on land and in water. 5 Some scientists think that genetically modified food might a cost less than food produced on a farm b taste better than the food we eat now ċ be dangerous for people's health