Chapter 2 - population and health Flashcards
(87 cards)
Overpopulation
A situation in which the number of people in an area exceeds the capacity of the environment to support life at a decent standard of living
Census
A complete enumeration of population.
Nonparticipant
Homeless people, ethnic minorities, and undocumented immigrants may not complete census forms.
Sampling
Statistical sampling can be done to get more accurate account, but in small towns oppose it.
How much of the Earth’s population is clustered in 4 regions?
2\3
We can understand how population is distributed by examining the properties of __ and __.
Concentration and density
Four clusters :
East Asia. South Asia, Europe, Southeast Asia.
Most live near:
A. Low lying areas. B. Fertile soil.
C. Temperate Climate.
D. Ocean or river with access to the ocean.
Ecumene
The portion of Earth’s surface occupied by Permanent human settlement
Sparsely Populated regions.
Dry lands (Sahara), Wet lands (Amazon), Cold lands (Arctic), HIgh lands (Alps)
Arithmetic density
The total number of people divided by the total land area.
Physiological Density
The number of people per unit area of arable land, which is land suitable for farming.
Agricultural Density
The ratio of the number of farmers to the amount of arable land (land suitable for agriculture)
Natural increase rate (NIR)
The percentage growth of a population in a year, computed as the crude birth rate minus the crude death rate.
Natural Increase Rate excludes __.
Migration
NIR was at ___ for a long time (most of history)
Zero
Currently the NIR is ___% peak was ___% in 1963
1.2 % and 2.2%
Doubling time
The number of years needed to double a population, assuming a constant rate of natural increase.
Life expectancy
The average number of years an individual can be expected to live, given current social, economic, and medical conditions. Life expectancy at birth is the average number of years a newborn infant can be expected to live.
Babies born today can expect to live to ___ in developed countries in Europe, but only to about ___ in developing countries of Sub-Saharan Africa.
80 and 57
More than __% of natural increase is clustered in ___
95%, Developing countries
The NIR is ___ in Europe, which means population is ___.
Negative, declining
Crude Birth Rate CBR
The total number of live births in a year for every 1000 people alive in society
Example of CBR
CBR of 20 means that for every 1000 people in a country, 20 babies are born over a one year period.