Ch.8 Human Population

The size of the human population began to increase exponentially after the

• bubonic plague

• development of plowing and irrigation

• Industrial Revolution

• development of the first cities.

Why has the world population dramatically increased?

• Better medicine
• Better sanitation
• Better technology
• All of the above

Number of Individuals per unit area

• density-dependent factors
• carrying capacity
• renewable resource
• population density

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.

Most of the worldwide human population is growing exponentially because

• human populations have not reached their exponential curve.
• most countries have not yet completed the demographic transition.
• human populations do not conform to the logistic model.
• the food supply is limitless.

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

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

The percentages of individuals found at different age levels make up the ______ of the population.

• carrying capacity
• age structure
• survivorship
• birthrate

What does the term carrying capacity describe?

• The maximum number of birth rates for a population.

• The ability of a population to accept new immigrants.

• The ratio of birth rates to death rates in a population.

• The population size that the environment can sustain.

If the number of births is greater than the number of deaths in a population, what will happen to the growth of the population?

• It will increase.
• It will decrease.
• It will stay the same.
• It will fluctuate.