Several pros about GMO is the health and nutrition benefits. You can also change an organism's DNA to your personal need, the ability to improve taste, the ability to help it adapt to severe weather conditions, spend less money producing more food, Do less tilling to remove weeds, thereby protecting the soil, and use fewer pesticides and herbicides.
http://www.safetysign.com/products/6645/warning-pesticides-sign
Some cons about GMOs are The reason why most people hate GMOs is because they are very expensive because some of them are weed killer resistant, creating “super weeds” that have evolved a resistance to glyphosate, a common herbicide in GMO food production, plants that produce their own insecticide, a bacterial toxin Bacillus thuringiensis
http://www.safetysign.com/products/6645/warning-pesticides-sign
Some cons about GMOs are The reason why most people hate GMOs is because they are very expensive because some of them are weed killer resistant, creating “super weeds” that have evolved a resistance to glyphosate, a common herbicide in GMO food production, plants that produce their own insecticide, a bacterial toxin Bacillus thuringiensis