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Population Dynamics
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Lesson 31- Introduction
1. What is inferred by the title “Population Dynamics”? Changes in population
2. Most of the world already does not have adequate clean water, food, housing and medical
care
3. What two factors may improve your situation in the doubling of the population and the struggle
for survival? Birth and educational opportunities
Lesson 32- Population Growth
1. If there are no limiting resources populations will have exponential growth which looks like the
letter J.
2. For most of our history humans have been hunter-gathers Populations were kept low because
the nomadic life did not favor large families.
3. When was the end of the last ice age? What did this do to the large mammal herds? 10,000
years ago, it forced them to change their diet and became extinct
4. Humans switched from Hunter gatherers to an agricultural life style which started our
population increase.
5. As the population increased, people began living in villages, then in towns and finally in cities.
This led to problems associated with overcrowded conditions, such as the buildup of wastes,
poverty and disease. Large families were no longer advantageous. Infanticide was common
during medieval times in Europe, and communicable diseases also limited the human population
numbers. Easily spread in crowded, rat-infested urban areas, black death, the first major
outbreak of the Bubonic Plague (1347-1351) drastically reduced the populations in Europe and
Asia, possibly by as much as 50 percent.
6. Why did the industrial revolution bring down the incidence of infanticide? More children were
working and so the family size increased
7. What two factors in the twentieth century made large families impractical again? Less work,
more disease
8. Know your pyramids.
Lesson 33- Population Demographics
1. What is natural population change rate? Human demography
2. What is the percent population growth for a country with a birth rate of 24 per thousand and a
death rate of 11 per thousand/. 1.3%
3. The annual population change for an area including immigration and emigration is ? net
population
4. The low death rates result from better sanitation, better health care and stable food production
that accompany industrialization.
5. Important factors influencing birth and death rates in human populations are: affluence,
average marriage age, availability of birth control, family labor needs, cultural beliefs, religious
beliefs and the cost of raising and educating children.
6. Rapid rates in human population growth over the past 100 years are attributed to: better
sanitation, better health care and stable food production that accompany industrialization.
7. As countries become developed they go through rapid growth, slow growth, zero growth, and
finally a reduction in population.
8. List the four stages of Demographic Transition. pre-industrial, transitional, industrial and postindustrial.
9. Pre-industrialized (stage) nations have a high birth rate and a high death rate.
10. Food production start increasing during the transitional stage. This stage is when population
increases rapidly.
11. During the industrial stage birth rate starts dropping and approaches the death rate.
12. What is happening to the percentages of older people in our world population? Why is this a
problem? The older population is growing rapidly and it is a problem because then there is going
to be no one to care for them.
Lesson 34- Pattern of Resource Use
1. What types of tools did hunter gatherers use? fashioned wood and stone tools for hunting and
food preparation, and used fire for cooking
2. When and where did humans start domesticating plants and animals? What is the term used for
this area? After the end of the first ice-age in southeaster turkey to western iran
3. What was the second invention that improved farming that occurred approximately 5000 years
ago? Speculate on the damage this has caused.. with your knowledge of soils.. the plow
4. Modern agriculture also requires large inputs of energy and ferterlizers, usually produced from
nonrenewable fossil fuels.
5. Next cultural change was the Industrial Revolution which occurred in the mid 18th century.
6. Industrial production of goods increased the consumption of natural resources such as minerals
fuel, timber, and water by cities.
7. Advanced industrial revolution include: increased production and consumption of goods by
humans, dependence on non-renewable resources such as oil and coal, production of synthetic
materials (which may be toxic or non-biodegradable) and consumption of large amounts of
energy at home and work.
8. Positive effects include: creation and mass production of useful and affordable products,
significant increases in the average Gross National Product per person, large increases in
agricultural productivity, sharp rises in average life expectancy and a gradual decline in
population growth rates.
9. Information Age: How might it lessen our impact on the Earth’s environment? Lessen by reduce
in natural resources consumption
Unit 7 Carrying Capacity
Lesson 35
1. Who is Thomas Malthus? And how did he contribute to our knowledge of populations? He was a
scientist who came up with the concept of carrying capacity
2. What is carrying capacity? the number of individuals of a population that can be sustained
indefinitely by a given area
3. What did wine and beef have to do with his theories? Because Thomas said that it takes more
engery to produce wine and beef than it takes to produce grain for food
4. What is a bread and water world? How many people would our world sustain?50 billion where
we have bread and watewr instead of wine and beef
5. How many people would our world sustain at our level of living? 2 billion
Lesson 36
1. How has technology affected human carrying capacity? airplanes
2. What is logistic growth? Factors that limit growth
3. When a population does not transition from exponential and logistic growth what may happen
to the population? What does that mean? Over shoot the carrying capacity, our population will
drop drastically.
4. What happened in Ireland? The Irish population exploded, they ran out of potatoes and famine
and disease followed making the population plummet.
1.
2.
3.
4.
5.
Lesson 37
What is “standard of living?” The qualitative measure of a person's or population's quality of life
How do Americans eat, and how does this affect our energy consumption? We eat lots and lots
of meat causing our energy consumption to be really low
Why should we use reusable canvas bags in the grocery store? Because those plastic bags are
quick waste
What is an ecological footprint? The impact someone leaves
http://www.myfootprint.org/
5.06 Earths