The Human Population

The human population doubled from 2 billion to 4 billion people in

• about 130 years

• about 44 years

• about 95 years

• about 175 years

Some under-developed countries have tried to control population growth by

• increasing fertility rate

• decreasing fertility rate

• increasing emigration

• decreasing emigration

Suburban sprawl, over-crowded schools, polluted rivers, and inadequate housing are symptoms of

• stable population size

• overwhelming population growth

• declining population size

• slow population growth

Access to adequate food, clean water, and safe sewage disposal have resulted in a decline in

• life expectancy

• the birth rate

• the death rate

• infant health

According to the theory of demographic trnsition, populations in Stage 1 tend to

• increase

• remain the same

• decrease

• be large

Suburban sprawl results in

• traffic jams

• inadequate infrastructure

• reduction of land for farms, ranches, and wildlife habitat

• All of the above

A population's age structure is represented by a

• population pyramid

• survivorship curve

• total fertility rate

• migration rate

What is the main source of energy in the poorest countries?

• coal

• solar collectors

• wood

• nuclear reactors

The graph of human population growth since 1200 BCE looks like

• a J-curve

• an S-curve

• a horizontal line

• a straight 45 line.

Infant mortality rates are least effected by

• average income

• parents' access to education

• clean water

• adequate food