Ch. 4

Question 0

dispersion

Answer 0

pattern of spacing of a population within an area

Question 1

population density

Answer 1

number of organisms per unit area

Question 2

density-independent factor

Answer 2

any factor in the environment that doesn’t depend on the number of members in a population per unit area

Question 3

density-dependent factor

Answer 3

any factor in the environment that depends on the number of members in a population per unit area

Question 4

population growth rate

Answer 4

explains how fast a given population grows

Question 5

emigration

Answer 5

describes the number of individuals moving away from a population

Question 6

immigration

Answer 6

describes number of individuals moving into a population

Question 7

carrying capacity

Answer 7

maximum number of individuals in a species hag an environment can support for the long term

Question 8

demography

Answer 8

study of human population size density distribution movement and birth/ death rates

Question 9

demographic transition

Answer 9

Change in population from high birth and death rates to low birth r and death rates

Question 10

zero population growth

Answer 10

occurs when birth plus immigration equals drag plus emigration

Question 11

age structure

Answer 11

number of males and females on each of three age groups: pre-reproductive stage, reproductive stage, and post-reproductive stage