For each of the following scenarios, please decide whether there will be an increase or decrease in short-run aggregate supply, or if there will be no change. 1. Although the economy is healthy, there is an increase in the natural rate of unemployment.
2. The price of lumber, a commodity, rises drastically due to the effect of heavy winter weather in the American Northwest, where much of the world's lumber is grown.
3. The production of a new type of blade for their combine harvesters, a tractor used to harvest crops, has allowed wheat farmers, like Herbert, to increase productivity by 40%.