Human Population Growth

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 (1500), the world’s population started

• decreasing.

• to reach carrying capacity.

• growing more rapidly.

• to level off.

The human population experienced exponential growth just after

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

The anticipated human population by the year 2050 is about

• 7.8 billion.

• 9 billion.

• 2 trillion.

• 78 billion.

In Rwanda, there are more young children than teenagers, and more teenagers than adults. This age structure indicates a population that

• has stopped growing.

• will rapidly increase

• will decrease in 30 years.

In countries like India, the human population is growing

• exponentially.
• transitionally.
• logistically.
• demographically.

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.

The human population in Canada contains almost equal numbers of people in each age group. This means that the population in Canada will

• double in 30 years.
• grow slowly but steadily.
• decrease exponentially.
• decrease to its carrying capacity.

According to Figure 5–4, which year had the highest number of live births per thousand of population?

• 1900

• 1990

• 1910

• 1940

In which year was the ratio of births to deaths at its lowest point, according to Figure 5–4?

• 1900

• 1990

• 1910

• 1940