An agreed-upon common language to facilitate communication on specific topics such as business is called a(n)
A) language group.
B) official language.
C) dialect.
D) lingua franca.
E) language family.
D) lingua franca.
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Which of these properties do polar bears in the Arctic depend upon for their habitat?
A. liquid water expands when it becomes ice B. salty water is more dense than fresh water C. aurora borealis D. conductive property of ice molecules
In what country are powdered rhino horns from Sub-Saharan Africa valued as a traditional medicine?
A) Yemen B) China C) Ghana D) Niger E) France
Use the following idealized stream channel to answer this question.
What is the wetted perimeter?
A. X+Y+Y B. XYY C. X+Y+Z D. XYZ
How does geomagnetism provide support for seafloor spreading?
A) Magnetic particles in basalt orient with the magnetic field in force at the time the oceanic lava cooled and hardened; the magnetic pattern is the same on both sides of the ridge. B) Mantle hot spots are always oriented to the magnetic field. C) The ocean floor is uniformly old, preserving the Earth's 4.6 billion history including past reversals in polarity. D) The oldest oceanic crust is always found near mid-ocean ridges. As one moves out from these ridges, the crust is simultaneously younger and oriented according to the polarity at the time. E) Isotopic analysis of ocean core sediments help determine sea floor age and this can be used to infer past magnetism.