Question

the trend of ................ drain have a higher population density
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Answer 1

Answer:

Population density (in agriculture: standing stock and standing crop) is a measurement of population per unit area, or exceptionally unit volume; it is a quantity of type number density. It is frequently applied to living organisms, most of the time to humans. It is a key geographical term.[1] In simple terms, population density refers to the number of people living in an area per square kilometre.

Population density (people per km2) by country, 2006

Population density (people per km2) map of the world in 1994. In relation to the equator it is seen that the vast majority of the human population lives in the Northern Hemisphere, as 67% of the Earth's land area is there.

Population density (people per km2) map of the world in 2005

Deserts around the world. Compare with maps above. See also this image for location of densely populated areas (cities) in various vegetation zones.

Biological population densities