Which of the following would be an ion with a double positive charge?
A. an Mg atom that gains one electron
B. an Mg atom that loses one electron
C. an Mg atom that gains two electrons
D. an Mg atom that loses two electrons
E. none of the above
Answer: D
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The most serious problem caused by population growth is ________
A) too few jobs B) lack of farmland to meet food needs C) increasing demand for resources D) inefficient food transportation E) crowding
Which of the following is FALSE of tropical cyclones?
A) Sea surface temperatures must exceed 26°C (79°F) for one to form. B) Storm surges often account for the greatest damage from tropical cyclones. C) They have hit Brazil, France, and Oman. D) They form around an intense high pressure center at the surface.
Continental polar air masses tend to be
A) cool and wet. B) cool and dry. C) warm and dry. D) warm and wet.
Freshwater is an example of a(n) ____
a. marine energy resource b. biological resource c. nonextractive resource d. ecological resource e. physical resource