Considering that nearly 85 percent of corn crops are genetically engineered, which impact does genetically engineered corn have on human health? a. only positives can come from this type of technology, as seen in the ddt study b. human health will not be affected because scientists have studied this technology for over 50 years. c. the genetically engineered corn is causing cancer. d. the long-term effects are unknown and have not been studied because it is a fairly new technology. need !