APES Chapter 7 Exam Review

The birth rate of a population is expressed as a

• ratio.
• fraction.
• logarithmic equation.
• percentage.

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

• fluctuates randomly.
• decreases each year.
• reaches carrying capacity.
• increases each year.

The most critical factor in controlling human population growth is

• controlling reproductive lifespan.
• decreasing the age of first birth.
• decreasing the average number of births per woman.
• decreasing infant death.

The total fertility rate (TFR) is an estimate of

• the number of children that will survive to adulthood.
• the number of years a typical infant will live.
• the number of children each woman in a population will have.
• the number of births per 1,000 people per year.

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

• arithmetically.
• sigmoidally.
• at a decreasing rate.
• exponentially.

Populations whose age structure diagrams are narrower at the bottom than the top have

• high death rates.
• the same proportion of individuals in each age group.
• a declining population.
• a high growth rate.

Population growth rates are high in developing countries because

• infant mortality rates are low.
• women tend to have children later in life.
• family planning is common
• children are often an important economic advantage.

The population of the United States continues to grow as a result of

• babies born to baby boom generation parents.
• the birth rate being above replacement level fertility during the 1940s through 1960s.
• population momentum.
• all of the above.

At present, Earth's human population is

• stable.
• declining.
• increasing exponentially.
• increasing at a constant rate.

Using the Rule of 70, a population growing at 10% would double in

• 7 years.
• 10 years.
• 15 years.
• 17 years.