Name______________________________

Period_____

9.2 Guided Reading

Populations

As you carefully read through the text, answer the following questions as completely as possible!

What is a population?

1. What is a population?

2. Scientists who study populations figure out how __________________ or stable the populations are; they also look at how the populations interact with the ___________________________.

3. What is population density?

4. Ecologists look at how individuals in a population are spread across the environment, this is called __________________________.

5. Describe the difference between birth rate and death rate.

6. Knowing the birth and death rates of populations gives you information about a populations ______________________________.

7. Describe how differences in birth rate and death rate affect the overall population trend.

Births, Deaths, and Migration

8. What does the population growth rate tell you?

9. What is the population growth rate formula?

10. List the six factors that affect reproduction.

11. Describe the differences between altricial and precocial organisms.

Migration

12. What is migration?

13. Describe the two types of migration.

14. What is the growth rate equation, including immigration and emigration?

Limiting Factors

15. What are limiting factors?

16. List several examples of limiting factors.

17. What is carrying capacity? Explain.

Food Supply is a Limiting Factor

18. Describe how the food supply acts as a limiting factor.

Other Limiting Factors

19. List other limiting factors beyond food supply.

Growth of Human Population.

20. Describe what Neo-Malthusians and Cornucopians believe in regards to human population growth.