Consider that the fallacy of composition is that what may be true in the individual (micro) instance may not necessarily be true in the group (macro) instance.  For example one see better at a football game if he/she stands up.  If everyone does it, no one sees any better.

Explain how the fallacy of composition applies to this situation: “One farm can earn more income by growing more wheat, but if all farms do it, no farm is better off.”  The phrase “supply shifts to the right” should be included in your answer.