usually when thinking of price elasticity of demand we are thinking of how the change in price will impact how much consumers buy. however, you can also follow the logic in reverse! having a lot of supply means prices are typically low for food. given how cheap food is, it takes up a relatively small portion of our incomes causing food to have a low elasticity of demand at these low prices. farmers care about this because a small change in output due to a good or bad harvest will do what?