Answer:
To get crude density, divide the total land area by the total population. You can see that when you measure a large area of land, the arithmetic density becomes meaningless because it “blends in” the urban population and masks the sparsely-inhabited areas with an average.
Answer:
An energy system is a system primarily designed to supply energy-services to end-users.[1]:941 Taking a structural viewpoint, the IPCC Fifth Assessment Report defines an energy system as "all components related to the production, conversion, delivery, and use of energy".[2]:1261 The field of energy economics includes energy markets and treats an energy system as the technical and economic systems that satisfy consumer demand for energy in the forms of heat, fuels, and electricity.[1]:941
I think it is Racial background
The coldest place in the northern hemisphere is
Oymyakon, the hottest El azizia, the coldest place in the southern hemisphere is Antarctica , the hottest being Port Augusta
