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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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.
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