If an isotope has a half-life of 4 billion years, then in 4 billion years what will happen?
a. The original amount will have doubled.
b. All of the original amount will have decayed.
c. All of the original amount will still be present.
d. Half of the original amount will still be present.
e. A quarter of the original amount will still remain.
d
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What has been the consequence of growing corn for use in the production of ethanol to alleviate dependence on oil?
a. The price of corn nearly tripled. b. Americans have saved a significant amount of money due to cheaper gas. c. The production of fuel for automobiles has become more energy efficient. d. The price of corn tortillas in Mexico fell.
Which of the following anthropologists was classified primarily as a culture and personality theorist?
A) Margaret Mead B) Victor Turner C) A.R. Radcliffe-Brown D) Bronislaw Malinowski E) Oliver Sacks
The term ________ refers to the minimal sound contrasts that distinguish meaning in a language.
A. phonemes B. grammar C. diglossia D. morphemes E. syntax
What is the dating method that uses the principle that undisturbed underlying geologic deposits are older than overlying geologic deposits?
a. Paleomagnetism b. K/Ar dating c. Stratigraphic dating d. Carbon-14 dating e. Fluorine analysis