A fourth factor is the increased requirements include food, housing, medicine. It also affects the environment. Make the environment degraded and polluted than natural edit and return to the same treatment.
Four factors include increased demand for food, shelter, medicine and the impact on the environment. Environment degradation and toxic than natural treatments to fix and restore the original.
The basic requirements increase, including food, shelter, medicine , and also affect the environment. Making the environment deterioration and too toxic nature will edit and water to return to the original