Explain in detail why farmers have to add fertiliser to soil to ensure good crop yields year after year ? (6 mark question) this is due tomorrow and i'm soo tired and can't think straight. : )

The plants they grow and products they harvest from it exhaust the ground, because the plants need minerals to grow but the minerals dont return to the ground when they die. Instead, (part of) the plant is harvested and the ground is left exhausted from minerals. Farmers add fertiliser to the soil to artificially make it rich of nutrients for the plants.