Explain ONE reason why cotton yield changed between 2002 and 2013. - HSC - SSCE Biology - Question 29 - 2022 - Paper 1

The introduction of Bt cotton resulted in a significant decrease in insect damage, particularly from cotton bollworms. The engineered Bt cotton produces a toxin that effectively targets these pests, thereby reducing their population and allowing for greater cotton yield. As the percentage of Bt cotton grown increased, the overall cotton yield rose due to less damage and disease, leading to enhanced agricultural productivity.