What are the Disadvantages of GM Crops?

-Transplanted Genes may Get Out into the Environment, meaning other Crops or Weeds will get Genes that make it more Annoying to deal with -Food Chains and Human Health may be Affected, although its worth to note not a lot of Evidence has been Made Yet, because its very New Technology -Farmland Biodiversity will Reduce, as again you only want the Crops that you have Picked [Reducing the Genepool]