Which of the following is associated with colloidal particles?
A) They are smaller than 1 nm.
B) They scatter light.
C) both a and b
D) neither a nor b
B
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Particularly strong winds can generate a dramatic dust storm, which is consisting of:
a. suspended load b. dissolved load c. surface load d. both a and b
If such an isotope existed, which one would be best to use for establishing the age of an archeological site that is about 50,000 years old?
A. one with a half-life of 2,000 years B. one with a half-life of 200,000 years C. one with a half-life of 20,000 years D. one with a half-life of 2 million years
The Bay of Pigs and the Cuban Missile Crisis refer to the same event
a. True b. False Indicate whether the statement is true or false
The ________ forms the relatively cool, brittle tectonic plates
A) asthenosphere B) eosphere C) lithosphere D) astrosphere