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Determine Which Examples Are Density-Dependent Population Changes and Which Are

Question 82

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Determine which examples are density-dependent population changes and which are density-independent population changes.

Premises:
A population of hares increases when the population of lynxes in the same area decreases.
A wildfire sweeps through a forest and kills 90 percent of the oak trees.
An insecticide used to reduce mosquito populations indirectly decreases bald eagle populations.
Yeast cells fill a broth-filled flask, resources become constrained, and growth is limited.
A virus spreads through a population of wild dogs and 20 percent of the dogs die.
Responses:
density-dependent population change
density-independent population change

Correct Answer:

A population of hares increases when the population of lynxes in the same area decreases.
A wildfire sweeps through a forest and kills 90 percent of the oak trees.
An insecticide used to reduce mosquito populations indirectly decreases bald eagle populations.
Yeast cells fill a broth-filled flask, resources become constrained, and growth is limited.
A virus spreads through a population of wild dogs and 20 percent of the dogs die.
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