consider the formula F=NM/P, where F represents the fertility of the soil. N represents the amount of nutrients in the soil. M represents the amount of moisture in the soil. And P represents the amout of pollutants in the soil. select an apropriate measurment unit for fertility of soil
![consider the formula FNMP where F represents the fertility of the soil N represents the amount of nutrients in the soil M represents the amount of moisture in t class=](https://us-static.z-dn.net/files/d8c/1b38fb1d2e5cacdba468e5cc5e178933.jpg)