Centralistic flow-through concepts fertilize the oceans

Using the centralistic flow-through concepts valuable plant fertilizer is lost.

Countries and pastures are fertilized so that the plants grow better and the acreages bring higher yields. By the incorporation of food, these fertilizing substances (mainly the nutrients NPK: nitrogen, phosphorus and potassium) are taken  into our bodies and are eliminated mainly with the urine.

Within central concepts the nutrients flow through the sewage systems into the sewage plants where they are only partly removed. If too much nutrients reach surface waters, like a lake, then it eutrophies - one also says "the lake tips over". The plant nutrients fertilize the lake and then cause a mass growth of algae. After they are dead, they sink to the ground. They are decomposed by other bacteria but this process needs large amounts  of oxygen. Thus, the oxygen level in the waters become scarce  and the fish suffocate.

Moreover, the Phosphate resources of the earth run low. One estimate  is that within some decades the phosphate stocks of the earth are exhausted. Phosphate thus is a particularly valuable raw material - this valuable material is wasted as a side effect by centralistic flow-through concepts.