Humans affect the phosphorus cycle mainly by the use of fertilizers and raising livestock, especially hogs. Fertilizers and hog waste are high in phosphorus, which makes its way into the soil (where it is necessary in moderate amounts) and, due to runoff, in water.Apr 27, 2012
When both daughter cells are the same cell type, this is called symmetric division. That's true whether they continue being stem cells or become something new. When one cell stays a stem cell and the other differentiates, it's called asymmetric division. This happens about 30 percent of the time.
The solid waste produced by a sewage-treatment plant is called Sludge
Answer: Option C
<u>Explanation:</u>
Sludge is a semi-strong slurry which is created as end product of mechanical procedures such as from water treatment, wastewater treatment or on location sanitation frameworks. For instance, it may be delivered as a settled suspension acquired from customary drinking water treatment, as sewage muck from wastewater treatment forms or as fecal slime from pit toilets and septic tanks. The term is additionally here and there utilized as a conventional term for solids isolated from suspension in a fluid.
