You actually need to use organic pesticides in greater amounts to achieve the same effectiveness. Also, certain GM crops are designed to be undesirable to local pests, yield more crops per acre, and can be sustained with less water. I recommend reading up on Norman Borlaug, the man who was awarded the Nobel Peace Prize and credited with saving the lives of over 1 billion people worldwide with GM foods. Cross pollination is a roll of the dice. You can get a good result mixed with some bad as well. We now have the ability to target specific genes to express the traits we want, but maintaining the integrity of the food....so much more efficient.
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