Potassium-40 (40K):
a. decays to carbon-14.
b. decays to the gas, argon-40 (40Ar).
c. has a full-life of 1.25 billion years.
d. is the same as carbon-14.
e. is destructive and therefore not used by paleoanthropologists.
b
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When deciding whether or not to have children, the primary consideration for a majority of North Americans is the
a. impact on the environment. b. costs and benefits to themselves. c. financial outlook for any children they have. d. social consequences of a larger population.
The remains found at Laetoli and Hadar are part of what fossil group?
A. Au. africanus B. Ardipithecus ramidus C. Au. anamensis D. Au. robustus E. Au. afarensis
Islamic art is very geometric and includes curvilinear designs. This is because
a. the Koran prohibition against the use of human images has also extended to representations of animals. b. Islamic art is based on a system of cursive writing. c. curvilinear lines are representative of the natural world that is being worshipped. d. it is the general cultural tradition of peoples in the Middle East.
The horticulturalist Iroquois depended solely on cultivated food resources
Indicate whether the statement is true or false.