What is true about the depth of the troposphere?
A. It varies with passing air masses.
B. It is shallower over the warm tropics.
C. It is deeper in winter.
D. It is shallower in summer.
E. It is deeper over the cooler poles.
A
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The mixing ratio is the most important of the moisture indices because:
A) it is the ratio of water vapor to a mass of dry air (as opposed to all air). B) it is the ratio of water content to capacity. C) it is the mass of water vapor relative to the mass of all other atmospheric gasses. D) it is the ratio of water vapor to the volume of air involved.
________ are found both on Mars and Earth
A) Erosional features related to flowing water B) Oceans C) Heavily cratered landscapes preserved from early in the planets' histories D) Active volcanoes
A hydrograph is
A. a diagram that illustrates flood recurrence intervals. B. a plot of stream stage or discharge versus time. C. a graph of variations in precipitation through time. D. a map showing the extent of a floodplain.
What are the four most common indoor air pollutants in U.S. homes?
What will be an ideal response?