Population Size and Structure Answers

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Which two factors can both cause a population to increase?

A
birth rate and emigration
B
birth rate and immigration
C
death rate and immigration
D
death rate and emigration
6

Predict what might happen to a population that is experiencing little immigration and emigration, low birth rate, and high death rate.

A
The population decreases.
B
The population increases.
C
The population grows too much too fast.
D
The population grows outside of its habitat.
8

The construction of wind farms has affected the migratory patterns of some bird populations. Bird populations have been noted to no longer increase and sometimes even decrease in these areas. What is this known as?

A
a density-dependent limiting factor
B
a population-independent factor
C
a density-independent limiting factor
D
a population-dependent limiting factor
9

Which best describes the following impacts: water storage, clean energy, and flood prevention?

A
positive impact of a density-dependent limiting factor
B
positive impact of a hurricane
C
positive impact of beavers in an ecosystem
D
positive impacts of dams on society

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