After the fall of the Soviet Union, some 25 million Russians found themselves to be ethnic minorities in newly independent countries. The largest number of minorities was found in what state?
A) Latvia
B) Estonia
C) Belarus
D) Lithuania
E) Ukraine
Answer: E
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The term ecumene refers to what?
A. uninhabited areas of the earth's surface B. the permanently inhabited areas of the earth's surface C. the study of ecology D. how population pressures affect the natural environment
The stars Procyon and Betelgeuse both appear equally bright to Earthbound viewers. Yet Betelgeuse emits 5000 times more light than Procyon. Why do they appear to be equally bright?
A) because Betelgeuse is much farther than Procyon B) because Betelgeuse is undergoing fission, not fusion C) because Betelgeuse lies in the same plane of Earth's orbit D) because Procyon is superhot
Of the following, ________ characterize(s) an oligotrophic lake or pond
A) low oxygen concentrations B) high nutrient levels C) high oxygen concentrations D) low nutrient levels E) Both C and D
Which of the following is true of ethylene?
A) It is not a very important industrial chemical. B) It is present in large amounts in natural gas. C) Its most important use is as a fuel. D) The vast majority of ethylene is produced by thermal cracking.