Is the Human Population Too Large?
Chapter 15, Problem 7
In contrast to nonhuman populations, human population growth rates have begun to decline due to . a. voluntarily increasing death rates; b. voluntarily decreasing birth rates; c. involuntary increases in death rates; d. involuntary decreases in birth rates; e. density-dependent factors
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Related Practice
Textbook Question
A population growing exponentially .
a. is stable in size;
b. adds a fixed number of individuals every generation;
c. adds a larger number of individuals in each successive generation;
d. will likely expand forever;
e. will not crash
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Textbook Question
According to the graph shown here, the carrying capacity for fruit flies in the environment of the culture bottle is .
a. 0 flies;
b. 100 flies;
c. 150 flies;
d. between 100 and 150 flies;
e. impossible to determine
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Textbook Question
All of the following are density-dependent factors that can influence population size except .
a. weather;
b. food supply;
c. waste concentration in the environment;
d. infectious disease;
e. supply of suitable habitat for survival
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Textbook Question
Populations that rely on stored resources are likely to overshoot the carrying capacity of the environment and consequently experience a(n) .
a. demographic momentum;
b. cultural carrying capacity;
c. decrease in death rates;
d. population crash;
e. exponential growth
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Textbook Question
The current carrying capacity of Earth for the human population may have been inflated by . a. demographic momentum; b. the tendency for women to want to control family size; c. an artificially low number of density-independent factors; d. our use of fossil fuels; e. recent population crashes
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Textbook Question
Demographic momentum refers to the tendency for .
a. low population growth rates to continue to decline;
b. high population growth rates to continue to increase;
c. populations to continue to grow in number even when growth rates reach zero;
d. populations to continue to grow in number even when women are reducing the number of children they bear;
e. women to continue to have children even though they no longer wish to
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