Match each symbol to what it represents.
a. p
number of moles
b. v
volume
c. n
pressure
d. r
8.314
e. t
temperature

in cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level. a contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes.

explanation:

2b2t

explanation:

2b2t