The term population density describes the

number of individuals per unit area.

Which of the following populations would be most vulnerable to an outbreak of a communicable disease?

250,000 people living in an area of 100,000 square meters

Which of the following populations would be most likely to experience an S-shaped growth pattern?

a wolf population after its reintroduction to a national park such as Yellowstone or Glacier, where they once lived but had become locally extinct

Bald eagle populations reached such low numbers in the 1960s that some biologists predicted their extinction in the continental United States; what action appears to have been most significant in reversing their decline?

The use of DDT was banned in the United States.

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ch 21

Question	Answer
The term population density describes the	number of individuals per unit area.
Which of the following populations would be most vulnerable to an outbreak of a communicable disease?	250,000 people living in an area of 100,000 square meters
The decrease in the availability of food, access to water, or access to cover that accompanies increasing population size illustrates the concept of a(n)	density-dependent factor.
Which of the following populations would be most likely to experience an S-shaped growth pattern?	a wolf population after its reintroduction to a national park such as Yellowstone or Glacier, where they once lived but had become locally extinct
Bald eagle populations reached such low numbers in the 1960s that some biologists predicted their extinction in the continental United States; what action appears to have been most significant in reversing their decline?	The use of DDT was banned in the United States.
The population explosion that occurred shortly after the Opuntia cactus was introduced to Australia is an example of

Created by: veronica1738

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