Ch 7 The Human Population

Which best explains the high rate of human population growth in the last 8,000 years?

• Humans have few offspring but their young survive at a high rate

• Humans have few offspring but their young survive at a high rate

• Climate change has allowed the human species to expand its range.

• Technology has allowed the species to increase Earth's carrying capacity.

• The biotic potential for humans has increased.

The human population is currently following roughly a J-shaped curve. This means that the population is

• growing more slowly than it did 100 years ago.

• changing in a cyclical pattern.

• shrinking at a small but steady rate.

• maintaining its current levels.

• increasing exponentially.

If the growth rate of a population is positive and remains constant, the number of people added to the population

• remains constant

• fluctuates randomly

• decreases each year

• reaches carrying capacity

• increases each year

The total fertility rate (TFR) is an estimate of

• the average number of children in a population that will survive past infancy

• the average number of years an infant born in a population can be expected to live.

• the average number of children each woman in a population will bear.

• the number of births per 1000 people per year in a particular population.

• the percentage of women in a population that have borne at least one child.

A country has a total fertility rate equal to replacement level fertility, and emigration equal to immigration. Which of the following must be true?

• The population is shrinking.

• The population is stable.

• The population is rising.

• The country has population momentum.

• The country has a low GDP

Which factor is NOT likely to affect the size of a country’s population over time?

• The amount of immigration and emigration.

• The crude death rate.

• The average age of females when they begin to bear children.

• The current carrying capacity.

• The crude birth rate.

Under which of the following conditions would a population grow?

• The birth rate and the death rate are equal

• The birth rate exceeds the death rate and there is no immigration or emigration

• Emigration exceeds immigration and the

  birth rate equals the death rate

• The birth rate equals the death rate and immigration is equal to emigration

• The carrying capacity is exceeded

Which formula can be used to estimate population size?

• CBR + Immigration + CDR + Emigration

• CBR + Immigration – CDR – Emigration

• CBR + Immigration + CDR – Emigration

• CBR – Immigration – CDR – Emigration

• CBR – Immigration + CDR – Emigration

Which factor is NOT considered when estimating world population?

• CBR

• CDR

• Total fertility rates

• Immigration

• Existing population

Which is NOT a factor in a population’s growth rate?

• The age at which females first reproduce

• he average number of offspring produced

• The reproductive lifespan

• The post-reproductive lifespan

• The number of male offspring