Suppose a strain of corn was genetically engineered to tolerate low ph, and the corn was then planted in a field that is exposed to severe acid rain. this example would be an illustration of

This example would be an illustration of the production of a transgenic crop that is adapted to its environment. when a genetically engineered corn with low pH is planted and according to the environment (ie.. due to acid rain) the pH changes helps in growing of corn

Because people are wasting it

The answer is nucleic acid