Which of the following is the BEST indicator of the actual amount of water vapour in the air?
A. saturation vapour pressure
B. dew point temperature
C. relative humidity
D. air temperature
Answer: B
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For the same discharge, which site is most likely to be flooded? 
A. A B. B C. C D. D
Maps are inherently inaccurate because ________
What will be an ideal response?
A gas under constant temperature will ________ in volume when the pressure is ________.
A. decrease; decreased B. decrease; increased C. keep the same volume regardless of pressure D. increase; increased
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A) of dust and gas in space B) of the decay of photons C) of the inverse square law D) Earth is not in the direction in which the Sun's emissions are strongest E) of the first law of thermodynamics