DNA: Output
New seats! Don’t unpack just yet!
Why is replacement level fertility
in developing countries higher
than replacement level fertility in
developed countries?
1
Homework
◦Demographic Transition worksheet
Agenda
1.
2.
3.
4.
DNA
Notes
Age Structure Sci-Fi
Building a concept map
UNIT 6: HUMAN
POPULATIONS
Human populations and cities
Factors affecting birth rates and fertility
rates
◦Importance of children as part of the labor
force
◦Cost of raising and educating children
◦Availability of private and public pension
systems
◦Urbanization
Factors affecting birth rates and fertility
rates
◦Educational and employment opportunities
available for women
◦Infant mortality rate
◦Average age at marriage
◦Availability of legal abortions
◦Availability of reliable birth control methods
◦Religious beliefs, traditions and cultural norms
Factors affecting death rates
◦Life expectancy – average number of years a
newborn infant can expect to live
◦Infant mortality rate – number of babies out of
every 1,000 born who die before their 1st birthday
◦ Between 1955-2006, global life expectancy increased from 48 to
67 years!
◦ In the world’s poorest countries, life expectancy is 49 years or less
Age Structure Diagrams
◦The number of people in young, middle, and older
age groups determines how fast populations grow
or decline.
◦Age structure – distribution of males and females in
each age group
◦Three age-group categories: prereproductive (ages
0-14), reproductive (ages 15-44), postreproductive
(ages 45+)
Age Structure Diagrams
Age Structure Diagrams
Age Structure Diagrams
Age Structure Science Fiction Ex
◦The Goobies are an alien race
that live on the planet
APEPEPA. Their population is
_______________ because of
improved food security.
Additionally, about 20 years
back, females Goobies really
wanted more girls so they
_________. In this graph, that is
supported by this data:
Concept-Mapping
1. Identify the key terms
2. Find the broadest (most general) term and put it at the top of a
new piece of paper. This is the topic of your map.
3. Organize the rest of your concepts into a smaller number of
groups.
4. For each of these groups, choose the most general term --or
create a general term/phrase that describes each group. Place
these group headings in a row under your general heading.
5. Pencil in a linking line between the top concept and each of
the group headings. Label each linking line with a connecting
word
Concept mapping: linking words
Definition
Leads to, Influences, Results
in, Causes, Controls
Develops into, Comes from
Is made up of, Is subdivided
into, Includes, Contains
Named by
Helps/Hurts
Example
Is a characteristic of
Predicts
Depends on
Is part of, A type is
Measured
Is the opposite of
Evidence for