The population pyramid of a city in southern Florida, Arizona, or even northern Japan may have a visual appearance of ________ because the city's population is dominated by elderly people.
A) being upside down
B) having a wide base
C) having perfectly vertical sides
D) being an age-sex ratio
E) being rightside-up
Question 2
The shape of a country's population pyramid
A) may be used to predict maternal mortality rates.
B) cannot be used to determine infant mortality rates.
C) may be used to estimate the country's dependency rate.
D) cannot be used to estimate the country's sex ratio.
E) is determined primarily by the combination of its crude birth rate and its crude growth rate.
Saguaro National Park in Arizona, part of the Sonoran Desert
(a) Climate diagram for a hot desert climateâ€â€ÂYuma, Arizona.
Estimating cicada population size and predation rates by birds.
Nitrogen fluxes in Sycamore Creek, Arizona (data from Grimm 1988).
The yellow-winged darter, Sympetrum flaveolum, is a dragonfly found in Europe and mid and Northern C
Population growth and growth rate, 1950 - 2100