Economists research how businesses are structured within sectors and how those businesses compete. Economists examine investments, risks, and savings. Economists research how domestic and international policies affect commerce. Economists research both the labour market's worker supply and its employer demand. Farmers lower the crop's price as the output of the corn crop rises, so that they may sell more of their harvest. When developing predictions about an item in the real world, such as what will happen to Maggie's consumption when its price rises, economic theories are often applied.