In our formal farming systems, we used our physical energy and power to work in our farm land, but these days we all rely on chemicals substance that why we can no longer manage our farm land and that is why we need physical energy. The reason why land is getting less in fatal in teams of production is because when the reproduction is more than two to three teams in a particular piece of land the manual of the land will be very weak in sense that the seed will not germinate very well.