Chapter 4 Vocabulary Flashcards Preview

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Flashcards in Chapter 4 Vocabulary Deck (12)
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1

Population Density

The number of organisms per unit area

2

Dispersion

The pattern of spacing in a population

3

Density-independent factor

Any factor in the environment that does not depend on the number of members in a population per unit area

4

Density-dependent factor

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

5

Population growth rate (PGR)

Explains how fast a given population grows

6

Emigration

The number of individuals moving away from a population

7

Immigration

The number of individuals moving into a population

8

Carrying capacity

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

9

Demography

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

10

Demographic Transition

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

11

Zero Population Growth

When births plus immigration equals deaths plus emigration

12

Age Structure

The number of males and females in each of three age groups:
Pre-productive stage, Reproductive stage, and post-productive stage