In the US typical household power consumption is about 11,700 kWh each year, in France it is 6,400 kWh, in the UK it is 4,600 kWh and in China around 1,300 kWh. The global average electricity consumption for households with electricity was roughly 3,500 kWh in 2010.n the US typical household power consumption is about 11,700 kWh each year, in France it is 6,400 kWh, in the UK it is 4,600 kWh and in China around 1,300 kWh. The global average electricity consumption for households with electricity was roughly 3,500 kWh in 2010.
Eutrophication sources. Eutrophication can be defined as enrichment of waters by inorganic plant nutrients, particularly nitrogen and phosphorous. This phenomenon can be either artificial (or cultural) or natural, depending on anthropogenic or natural causes.Sources of artificial pollution are either urban or rural.Urban sources of eutrophication include domestic sewage, industrial wastes and storm drainage. The contribution of nitrogen and phosphorous per person is 10.8 g N and 2.2 g P on average [3] .ources of artificial pollution are either urban or rural. Urban sources of eutrophication include domestic sewage, industrial wastes and storm drainage. The contribution of nitrogen and phosphorous per person is 10.8 g N and 2.2 g P on average [3] .
Definition (by USGS). Eutrophication is a process whereby water bodies, such as lakes, estuaries, or slow-moving streams receive excess nutrients that stimulate excessive plant growth (algae, periphyton attached algae, and nuisance plants & weeds).rophic state. The level of eutrophication of a water body is expressed as a trophic state. The trophic state of a water body is derived from multiple parameters. Besides nutrient concentrations such as phosphorus and nitrogen, other parameters such as chlorophyll-a and secchi-depth are also used.