Questions 1-10

24  corn: The writer says that ‘. . . farmers in the US 
opted out of soy [= they decided not to plant soy 
anymore] in favour of corn [= they decided to plant 
corn instead] as a biofuel crop’. She then explains 
that soy prices increased, so Brazilian farmers 
planted soy – which required land to be deforested. 
25  Biodiversity: ‘But while deforestation [= when 
forests are cleared] can certainly lead to economic 
benefit for farmers, it also puts biodiversity at risk  
[= biodiversity is threatened].’
26  fertiliser: ‘Then, once a biofuel crop has been 
planted on deforested land, farmers need to 
ensure that it [= their crop] grows as well as it can. 
That means applying [= using] large quantities of 
fertiliser, and while this helps the plants to shoot 
up, there is also the possibility it will lead to the 
contamination [= the pollution] of local rivers.’
READing PASSAgE 3