Which of the following best represents the actual percentage of the world's population that gets their drinking water from aquifers?
A. 50%
B. 25%
C. 75%
D. 100%
Answer: A
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Innovations in agriculture have increased food supply. This has allowed human populations to grow to approximately ________ by the end of the agriculture period
A) 100 million B) 1 billion C) 1.5 billion D) 1 million E) 500 million
If a geographer uses aerial photos and satellite images to study land use, traffic, forestry, and pollution; this geographer most likely has a major in what sub-field
a. remote sensing. b. demography. c. anthropogenic. d. ethnography. e. geomorphology.
In midlatitude desert (BWk) climates, the ________ temperature is greater than in subtropical desert (BWh) climates
A) average annual B) daily high C) annual median D) annual range of E) daily low
Harry Hess proposed the theory of seafloor spreading, the creation of new oceanic crust
at mid-ocean ridges. Indicate whether the statement is true or false.