Name____________________________ Class ________________ Date ____________
Section 5–1 How Populations Grow (pages 130–136)
1. The is the area in which a population lives.
2. Population density is the of individuals per unit area.
3. How the individuals are spaced in their range is a population’s
4. Growth rate is how quickly a population _______________________ in size.
5. To find the of a population, count the number of males and females of each age.
For Questions 6–10, write True if the statement is true. If the statement is false, change the underlined word or words to make the statement true
6. If the death rate is less than the birthrate, the population is likely to shrink.
7. Immigration increases population size.
8. Young animals may immigrate from the place where they were born to establish new territories.
9. A high birthrate and immigration decrease population size.
10. Populations grow if more individuals are born than die in a period of time.
individuals that enter or leave the population
Section 5–2 Limits to Growth (pages 137–141)
For Questions 18–23, write True if the statement is true. If the statement is false, change the underlined word to make the statement true
18. Limiting factors determine the immigration capacity of a population.
19. A limiting factor controls the growth of a population.
20. Limiting factors operate when growth is exponential.
12. Populations grow too large in the absence of limiting factors.
22. Competition is an example of a limiting factor.
23. Population size can be limited by factors such as predation.
Section 5–3 Human Population Growth (pages 142–145).
For Questions 35–39, write True if the statement is true. If the statement is false, change the underlined word or words to make the statement true.
35. Over the last 1000 years, the size of the human population has decreased.
36. Since the 1800s, human population growth has been logistic.
37. The human population has increased because birthrates have dropped.
38. The combination of low death rates and high birthrates led to exponential growth.
39. Charles Darwin suggested that human populations are regulated by war, famine, and disease.
Patterns of Population Growth
Use these age structure diagrams to answer Questions 40–42