Populations

The anticipated human population by the year 2050 may be about

• 7.8 billion.

• 9 billion.

• 9 trillion.

• 78 billion.

Which country has not yet completed the demographic transition?

• United States

• India

• Great Britain

• Japan

Demography is the scientific study of

• parasitism and disease.

• modernized countries.

• human populations.

• economic transitions.

Human population growth has slowed down in

• China.

• the United States.

• India.

• Africa.

Which of the following is a density-independent factor?

• earthquake

• disease

• emigration

• parasitism

Each of the following is a density-dependent limiting factor EXCEPT

• competition.

• unusual weather.

• crowding.

• disease.

Which of the following describes the largest number of individuals that an environment can support?

• carrying capacity.

• immigration.

• emigration.

• exponential growth.

Any factor in the environment that causes population growth to decrease is a

• carrying capacity.

• limiting nutrient.

• limiting factor.

• growth factor.

The various growth phases through which most populations go are represented by a(an)

• logistic growth curve.

• exponential growth curve.

• demographic curve.

• age-structure curve.

Which of the following is NOT a factor that may control the negative impact of population growth?

• science

• technology

• changes in society

• ethics