5.3 HUMAN Population

Demography is the scientific study of

• parasitism and disease.
• modernized countries.
• human populations.
• none of these

Demographic transition is change from high birthrates and high death rates to

• exponential growth.
• low birthrates and low death rates.
• low birthrates and high death rates.
• indefinite growth.

About 500 years ago, the world’s population started

• decreasing.
• to reach carrying capacity.
• growing more rapidly.
• to level off.

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The human population experienced exponential growth just after

• agriculture began.
• plowing and irrigation began.
• the bubonic plague began.
• the Industrial Revolution began.

Using Figure 5–6, describe the type of growth Mexico is experiencing.

• Mexico is experiencing a rapid growth rate because there are more children than adults.

• Mexico is experiencing no growth because people are living longer.

• Mexico is experiencing slowed growth because there are fewer adults.

• Mexico is experiencing a rapid decline because there are more children than adults.

What evidence do you see in Figure 5–6 that the United States is gradually entering the last stage of demographic transition?

• The age structure for the US has fewer children in the younger age categories

• The age structure for the US has fewer adults in the middle age categories

• The age structure for the US has greater numbers in the 15-19 age category

• The age structure for the US shows females living longer than males.

What three factors can affect ANY population's growth rate?

• Birthrate, death rate, migration
• disease, predation, migration
• medicine, agriculture, industry
• life expectancy, sanitation, vaccines

In a given population, the birth rate is equal to the death rate. Which of the following would be a true statement about this population?

• The population is growing exponentially.
• The population is decreasing in size.
• The population is remaining constant in size.
• The population is increasing in size.

Which one of the following is NOT a characteristic of the carrying capacity?

• The carrying capacity changes as the environment changes.
• The carrying capacity is the number of individuals the environment can support.
• The carrying capacity is determined only by the density-dependent factors.
• Birth rate is equal to the death rate at the carrying capacity.

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Beginning in the 1600’s, the human population on Earth:

• began to grow exponentially.
• had a low birth rate and a high death rate.
• reached the carrying capacity
• was a perfect model for logistic growth

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