A con of gmos is that? Is is the answer they require fewer materials to grow crops?
No, that statement is not a con of GMOs. In fact, it can be considered as a pro since GMOs can potentially improve crop yields and reduce the need for additional materials like pesticides and fertilizers.
A con of GMOs, on the other hand, could be the environmental concerns associated with their development and use, including potential cross-contamination with non-GMO crops, the development of resistance in pests and weeds, and impacts on biodiversity. Additionally, there are concerns regarding the long-term health effects of consuming genetically modified foods, although scientific consensus generally considers currently available GMOs safe for consumption.