 The theory of Differential rent I shows how extra profit is transformed into rent by equal quantities of capital being invested on different lands of unequal productivity, while the theory of Differential Rent II refers to the difference in profitability resulting from unequal amounts of capital being invested successively and intensively on different plots of land of the same type.Differential rent II implies the appropriation of surplus profits created by temporary differences in yield, which are due to the application of unequal capitals to the same type of lands.The absolute ground rent is sometimes explained as the rent which landowners can extract because they monopolise the access to or supply of land, and sometimes as the rent which arises due to the difference between the product-values and prices of production of output in agriculture, because of a lower than average organic composition of capital in agriculture as compared with industry.