The agricultural extension agent told the farmer that one more crop-dusting will likely add a ton of additional wheat to the harvest. the rational farmer then calculated the selling price of a ton of wheat, since he would decide to crop-dust again if and only if

The agricultural extension agent told the farmer that one more crop-dusting will likely add a ton of additional wheat to the harvest. The rational farmer then calculated the selling price of a ton of wheat, since he would decide to crop-dust again if and only if the marginal benefit is greater than the marginal cost of an additional crop-dusting.

Gases enter the atmosphere and trap the sun's heat warning the earth.