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Chapter 4 Vocabulary Exam

Across
The number of both males and females in each of three age groups: pre-reproductive stage, reproductive stage, and post-reproductive stage
The number of organisms in a unit area
The study of human population size, density, distribution, movement, and birth and death rates
The pattern of spacing of a population within an area
Any factor in the environment that does not depend on the number of members in a population per unit area
The change in a population from high birth and death rates to low birth and death rates
Down
Occurs when births plus immigration equals deaths plus emigration
Explains how fast a given population grows
The maximum number of individuals in a species that an environment can support for the long term
The term ecologists use to describe the number of individuals moving into a population
The term ecologists use to describe the number of individuals moving away from a population