Which of the following factors does not usually affect the crude death rates of a population?
A. Health care
B. Age structure of the population
C. Nutrition
D. Sanitation
E. All of these affect crude death rates
Answer: E
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Cow belching results in the release of methane, a greenhouse gas
Indicate whether the statement is true or false
On the Pacific Islands of Oceania, which climate would you expect to find?
A) humid continental B) humid tropical C) tundra D) semiarid
Mexico City's main plaza (zocolo) sits atop the ________
A) tombs of Spain's monarchs B) Aztecs' holiest temples C) gold stolen from Aztec priests in the colonial period D) skeletons of thousands of Aztecs killed during the colonial period.
Which of the following would do the most harm to the productivity of a garden?
A) Killing the fungi and bacteria in the soil B) Killing the nematodes and insects in the soil C) Adding humus and sandy loam to the soil D) Plowing into the soil the stalks from last year's crops