REVIEW FOR CHAPTER 4 TEST
THE HUMAN POPULATION AND THE ENVIRONMENT
Questions 1-2 refer to Figure TB4.1 below:
Female 55 +
16 12 8 4 0 4 8 12 16
Percent of the po pula tion
1. The figure above illustrates what concept?
2. Assume that the figure above illustrates the characteristics of a tribe on a small
Pacific island. What are some plausible explanation for the shape of the graph?
3. Why do people of Bangladesh occupy low-lying coastal areas of their country,
areas that were susceptible to devastating monsoon flooding?
4. Decreased death rate and the accelerated rate of human population growth are
related to __________________.
5. The “demographic transition” refers to ____________________________.
6. In a developing country, chronic diseases account for a _________ proportion of
total mortality. Acute diseases account for a _________ proportion of total
7. Rapid human population growth puts an especially heavy burden on _________.
8. In primitive countries, breast feeding slows population growth because _______.
9. Human demography suggests that an improving economy in a country correlates
10. The demographic transition occurs in three stages. Under which circumstance is a
nation UNable to make the transition from stage II to stage III?
11. How rapidly a population changes depends most upon ____________________.
12. The crude growth rate is defined as ___________________________________.
13. The basic concepts of population growth and change are known as __________.
14. The simplest and one of the least controversial means of slowing population
growth is ______________________.
15. Calculate the doubling time of the population in Kellertopia. The annual
population growth in this fictional country is 5.0 %.
16. The growth rate of the human population has increased over the last few hundred
years due to all of the following reasons except __________________________.
17. The current population of Demographica Island is 10 million inhabitants, and the
population is doubling every 10 years. Current agriculture on Demographica
could feed 20 million people, and technological improvement is expanding that
capacity by 1 million every year. Given only this information, when will there be
a food shortage on the island?
18. In June 2001, 17,800,000 people inhabited Demographica Island. During the time
period from 2000 to 2001, 301,000 births were recorded. During the same period
of time 120,000 deaths occurred. Calculate the growth rate (in %) for
Question 21 refers to Fig. TB4.2 below:
Number of Individuals
0 - 10 - 20 - 30 - 40 - 50 - 60
19. Examine the graph above illustrating the age distribution of people in a tribe in
the Amazon basin. What might be the significance, from a demographic
standpoint, of this distribution for the future of this population?
20. What is the term that describes individuals leaving a population?
21. A population has a growth rate of 2-percent per year? How long will it take for
this population to double?
22. An age-structure pyramid is used to _________________________________
23. Which of the fallowing are exhibited by k-select organisms?
I. Slow maturation
II. Many small offspring
III. Reproduction occurs late in life
24. A population cycle that is marked by regular increases and decreases in its
numbers is correctly said to be_________________________________
25. The demographic transition model is used to study the ____________________
26. Give examples of density independent population factors?
27. When a population encounters environmental resistance it is most likely to
28. A population’s growth can best be calculated using what equation?
CHAPTER 4 SHORT ANSWER QUESTIONS
1. The diagram above illustrates the three main types of survivorship curves.
Describe the characteristics of a population that displays each of the types of
survivorship curves and give and example of a population that would exhibit
that particular type of survivorship curve.
2. What is the difference between an r-strategist species and a k-strategist
species? Describe the characteristics of each strategy and give one example of
a species that exhibits each strategy.