The geologic time scale was originally based upon ____
a. changes in Earth’s biota
b. the theory of organic evolution
c. the isotopes of minerals
d. absolute ages of rocks based on radiometric age dates
e. geographic mineral locations
a
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Allopatric speciation is most likely to occur after a(n) ____
a. earthquake b. mountain building c. volcanic eruption d. pet is lost e. pond is dredged
What colonial power settled Greenland?
A) France B) Spain C) Britain D) Denmark
The second law of thermodynamics states that whenever energy is converted from one form to another, some of the useful energy is lost.
Answer the following statement true (T) or false (F)
As a general rule, friction is greatest ________
A) near the Earth's surface B) at jet stream altitudes C) near the poles D) near the equator E) at the middle latitudes