people die or leave to a different place
Wars and epidemics can decrease the populations in affected areas.
A low Birth Rate and environmental hazards are two things that can cause a population to decrease.
A low birth rate and environmental hazards are two things that can cause a population to decrease.
people die or leave to a different place
Death - especially war & disease.
By Genocide, and by war..
The deathrate exceeds the birthrate.
Increase "Baby Boom"
The population of zoo plankton would decrease.
A decrease in the birth rate will cause a decrease in population over time.
What MRC population is the easiest to decrease for improvement of a unit's deployability rates?
Death and migration are factors that can decrease hare population.
When 2 things increase or decrease by the same proportion