Lesson Quiz 2.3 Human Population Growth

Over various spans of time, human populations have increased, decreased, or remained the same, and at both global and local levels. Which statement best explains this observation?

• Unlike other populations, the human population changes size because of specific choices of its members.

• Unlike other populations, the human population has the ability to grow rapidly without limit.

• Like other populations, the human population is affected by a variety of factors in the environment.

• Like other populations, the human population increases and decreases in a cyclical pattern.

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NGSS.MS-ESS3-4

A scientist is studying the human population of Country X. To predict the future growth rate of the population, which three statistics about the population of Country X would be most useful for the scientist to analyze? Select three answer choices.

• birthrate

• death rate

• population distribution

• population density

• age structure

A scientist constructs a graph to show the age structure of the human population of Country Y. The graph is shown here. What conclusion is supported by the graph?

• The population is decreasing because there are fewer older members than younger members.

• The population is relatively stable because there are fewer older members than younger members.

• The population is relatively stable because the death rate is about the same as the birthrate.

• The population is increasing rapidly because of the youth of the population.

The human population of the United States passed through the demographic transition between 1790 and 1910. How has the population changed after 1910?

• The population has been increasing exponentially.

• The population has been increasing in a pattern explained by logistic growth.

• The population has been fluctuating at or near carrying capacity.

• The population has been decreasing at a steady rate.

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NGSS.MS-ESS3-4

The global human population was growing exponentially up until the second half of the twentieth century. According to the ideas of Thomas Malthus, could this exponential growth have continued indefinitely?

• Yes, because the human population is capable of adapting to a wide variety of environments.

• Yes, because developments in technology allow an increase in the carrying capacity of the human population.

• No, because the human population depends on limited resources, and may suffer from war, disease, and famine.

• No, because the human population increases and decreases in a cyclical pattern, similar to patterns of predator and prey populations.

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NGSS.MS-ESS3-4

Which line represents the carrying capacity of this population?

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

Select the area in the graph showing when population growth seems to reach the carrying capacity

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NGSS.MS-ESS3-4

NGSS.MS-LS2-1

Match the following

• carrying capacity

• largest number of individuals in a population that the environment can support

• immigration

• movement of individuals into an area

• emigration

• movement of individuals out of an area

Match the following

• Population size

• The size of a population of bears in a certain area

• Population density

• How people or organisms are spread out in an area

• Population dispersion

• The number of trout in a stream

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NGSS.MS-LS2-1

NGSS.MS-LS2-4

Some limiting factors in populations are dependent on how many individuals are found within a given area. Viruses and the spread of disease are density ​ (a)   . Natural disasters such as fires and floods are density ​ (b)   .

• dependent
• independent