Final answer:
The author creates an informal definition of genetically modified organisms (GMOs) by including the sentence about corn being vulnerable to certain worms. This passage explains that GMOs are organisms that have had their genome artificially changed through genetic engineering.
Step-by-step explanation:
The author creates an informal definition of genetically modified organisms (GMOs) by including the sentence about corn being vulnerable to worms that eat and destroy the stalks. The passage explains that GMOs are organisms that have had their genome artificially changed through genetic engineering. The example of corn being modified to produce traits that enhance growth or nutritional profile demonstrates the concept of GMOs in a relatable context.