Ehrlichs dire projections differed from those of

Ehrlich's dire projections differed from those of Malthus in that he applied the principle of geometric
progression to
In the modern world, how many countries are believed to be in Stage 1 of demographic transition?
0
In _______, death rates have declined markedly even as infant mortality rates continue as the highest in
the world.
c) Afghanistan
Demographically speaking, in the United States the rate of natural increase is currently below
What is the standard symbol for carrying capacity?
K
Which type of historical information about a population would not be found in an age pyramid?

a) Ethnicity
Infant mortality is defined as the percentage of infants who die within _______ months after birth in a
given population per 1,000 live births per year.
d) 12
Which stage of transition theory is usually quite brief?
The _______ ratio compares the number of economically productive people within a specific population
to the number of people younger than 15 and older than 64.
In transition theory, the main factor in the reduction of death rates is
In the four-stage model of transition theory, declining death rates and continuing high birth rates are
characteristic of Stage
In modern times, the greatest threat of famine is associated with
Which statement best characterizes the temperate grassland biome?
Which planet is in the so-called "Goldilocks zone"?
Which of these is a biotic factor in an ecological system?
The ozone layer contains about _______ percent of atmospheric ozone.

According to the course, _______ scientific experts believe there is still time to address environmental
problems and change our course toward a sustainable future.
c) most
Hydrofluorocarbons (HFCs) have largely replaced chlorofluorocarbons (CFCs) in an effort to reduce ozone
layer depletion. What is a drawback to this strategy?
Taiga includes the largest contiguous forests on the planet and make up about _______ percent of all of
Earth's forests.
c) 30
Disruption of the _______ cycle will have an unpredictable impact on humans due to this cycle's vital
role in regulating global climate patterns.