Q: a: for over a decade, farmers in the u. s. have been planting genetically modified crops. an example of one of these crops is corn that is resistant to weed-killer. this makes it so that no corn is lost due to contact with herbicide meant to kill weeds. while this is seen by many as a positive development, others see it as a cause for concern. what is one possible negative side effect of planting genetically modified corn? a) genetically modified corn, as well as other plants, is unnatural. b) corn will replace wheat and other crops as our main source of carbohydrates. c) plants with modified genomes may have a predictable impact on the environment. eliminate d) plants with modified genomes may have an unforeseen impact on the environment.