Which of the following is a greenhouse gas?
A. oxygen
B. nitrogen
C. argon
D. methane
Answer: D
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Which is the principle behind wetlands-based sewage treatment systems?
A. Mimic natural processes in a series of tanks filled with aquatic plants. B. Use high strength chemicals to disinfect large amounts quickly. C. Let nature take care of it by dumping raw sewage in rivers. D. Simply pour sewage into existing, unlined natural wetlands.
Imagine you are a geologist standing in front of a large outcrop of sandstone, shale, and limestone layers. It is your job
to determine the depositional environment(s) and paleogeographic history of the area. What are four pieces of information needed to make a determination, and how will those pieces of information help you make a determination? Fill in the blank(s) with the appropriate word(s).
Which of the following are the precursors of phosphatidylcholines?
A) cholinates B) cholinesterates C) phosphatidates D) triphosphates
A humidity measure that remains constant as temperature and pressure change, and which is expressed as a mass of water vapor per mass (g/kg) of air, is
A) relative humidity. B) vapor pressure. C) the dew-point. D) specific humidity.