Mercury barometers:
A) use mercury because it has a low density.
B) are more cumbersome than water barometers.
C) give direct measurements in millibars.
D) are inverted into a pool of mercury.
Answer: D
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Why must the process of mountain building be inferred through the principle of Uniformitarianism?
A) Uniformitarianism is a law so it must be so. B) Mountain building occurs over millions of years so geologists must assume what takes place during the process. C) Mountain building occurs very quickly. D) Uniformitarianism describes mountain building word for word.
The quality of the final treated secondary wastewater effluent from a modern treatment plant is typically
A) lower in organic and nutrient content than the body of water into which it is discharged. B) lower in organic content but higher in nutrient content than the body of water into which it is discharged. C) higher in organic and nutrient content than the body of water into which it is discharged. D) higher in organic content but lower in nutrient content than the body of water into which it is discharged.
Rates of primary productivity in the open ocean are about the same as ________.
A. intensive agriculture regions B. deserts and grasslands C. rainforests D. pastures
This cross section shows the location of a septic tank with harmful bacteria and 5 wells. Which well is least likely to become contaminated?
A. well A B. well B C. well C D. well D E. well E