Which example is not an outcome of the environment modifying a phenotype? Choose the correct answer.
the changing of the color of an animal's fur as the temperature changes
the increased intelligence of a person who attended school for many years
the pink-flowered snapdragons that result from crosses between red-flowered and
white-flowered snapdragon plants
the very short stature of a kind of tree that grows at a high altitude in comparison with
the same kind of tree growing at a lower altitude