In both the U.S. and Canada, population density increases west of the 25-inch line of equal rainfall
a. True
b. False
Indicate whether the statement is true or false
False
RATIONALE: The 25-inch (635 mm) isohyet (line of equal rainfall) that runs roughly from Winnipeg south to the Rio Grande marks the general divide between the heavily populated east and lightly po-pulated west in both countries.
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OPEC, the Organization of Petroleum Exporting Countries
A) members are only Middle East countries. B) was organized after 9/11/2001 to control oil prices. C) was established in 1960 to control oil production, profits, and pricing. D) was established as a response to Reagan's attack on Libya in 1986. E) was established as a response to Desert Storm.
The main problem with use of conventional natural gas as a transportation fuel is
a. the expensive engine modifications required to convert an automobile for use of natural gas b. the fact that it has higher CO2 emissions than gasoline produced from conventional oil c. the very low reserves, which could supply U.S. needs for less than 25 years d. the fact that not many fueling stations exist at present e. it can only be obtained by fracking
What is one possible reason artiodactyls have been more successful than perissodactyls?
a. Artiodactyls developed the ability to fly. b. Artiodactyls developed multiple stomachs to aid in digestion. c. Artiodactyls developed long limbs to run faster. d. Perissodactyls developed the ability to fly. e. Perissodactyls developed multiple stomachs to aid in digestion.
Which of the choices is a diagnostic characteristic of a mineral?
a) Minerals are only made of organic material from living organisms b) Minerals only occur as solids c) Minerals may occur naturally or may be synthetically made. d) Each mineral had a defining chemical composition with no possibility for variation or the substitution of elements. e) Minerals lack a repetitive geometric structure.