GMOs are harmful to the environment.

Farmers who grow GMO commodity crops, like soy and corn, do less tilling, which reduces topsoil loss, erosion, and the associated runoff of fertilizer. They also can cultivate pest-resistant GMO crops, like Bt cotton, corn, and eggplant, with far fewer applications of pesticides, which benefits human and environmental health. Agriculture and its associated land use accounts for over a quarter of all global greenhouse gas emissions. On average, GE crops have reduced chemical pesticide use by 37%, increased crop yields by 22%, and increased farmer profits by 68%. GE crops also have reduced CO2 emissions (mostly through enabling no-till farming practices) by 27 billion kg—equivalent to taking 12 million cars off the road (Qaim et al. 2014).