When soil lacks nutrients needed for crop growth, farmers might add fertilizer to the topsoil to promote the growth of crops.
Fertilizer is a natural or artificial substance that is usually added to soil to improve soil fertility, plant growth and productiveness. Nitrogen, phosphorus, and potassium are the major chemical elements in fertilizer that helps plants to grow. Addition of fertilizers to soils restores the chemical elements taken from the soil by previous plants and it improves natural fertility of the soil.
atleast trying to make it renewable as possible, not use it too much, not taking the non renewable one, possibly find a new place that have the enough resource and.. maybe going further into space to use it resource
Metropolitian Areas are those that are developed. This answer makes the most sense because a developed area is one that people have grown in and settled.