POPULATION DYNAMICS - Pop. change 1.2 Flashcards
1
Q
Population change
A
(BR-DR) + net migration
2
Q
Net migration
A
immigration - emigration
3
Q
Natural change
A
BR - DR
4
Q
Birth rate
A
Number of people born per year, per 1000 of current pop.
5
Q
Death rate
A
Number of people who die per year, per 100 of current pop.
6
Q
Natural increase
A
When birth rate exceeds the death rate
7
Q
Zero pop. growth
A
When BR=DR (+ any migration)
8
Q
Carrying capacity
A
Largest population that resources of an area can support
9
Q
Resources
A
Any feature of the environment that are needed by or used by humans
10
Q
Optimum population
A
When population and resources are evenly matched
11
Q
Under-population
A
When there are too few people within area to use the resources efficiently
12
Q
Over-population
A
When there are too many people within an area relative to the resources available
