A line of constant pressure is called:
a. An isobar.
b. An isotherm.
c. A millibar.
d. A gradient contour.
a. An isobar.
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A) when fuels are burned at high combustion temperatures. B) if the sun is shining brightly and there is a temperature inversion. C) on cloudy days when carbon and soot levels are unusually high. D) if radon gas is present when gasoline is burned in automobiles.
The Deutschemark is the currency of the European Monetary Union
Indicate whether the statement is true or false
A major cause of the differences in elevation between ocean basins and continents is ________
A) temperature B) viscosity C) density D) mass
Seismic gaps are places where scientists think that ________
A) faults are storing elastic strain B) earthquakes are unlikely to occur C) faults are storing stress D) faults are creeping smoothly