Using Figure 9.9 in your textbook, which element is present in the mantle in the same quantity as it is present in meteorites?
A) Ge
B) Ga
C) Al
D) Ru
Answer: B
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El Niño:
A) usually causes drought in California. B) results from a lower temperature of surface waters in the eastern Pacific. C) results in both reduced air pressure and increased evaporation. D) typically does not affect the northern portion of the United States.
What offsets the mid-Atlantic ridge's movement at fairly regular intervals?
A) Hydrothermal vents B) Cooling lithosphere C) Transform faults D) Seamounts
The Celsius scale
A) is used exclusively in the United States. B) places freezing at 0° and was formerly called centigrade. C) was developed by the British physicist Lord Kelvin. D) was developed by Fahrenheit, who also developed the alcohol and mercury thermometers. E) places freezing at 32° and boiling at 212°.
Which of the following is catalyzed by arginase?
A) the conversion of D-arginine to urea and D-ornithine B) the conversion of L-arginine to urea and L-ornithine C) the conversion of L-arginine to urea and D-arginine D) the conversion of both the D and L forms of arginine to urea and the D and L forms of ornithine