The amount of heat energy required to raise the temperature of a unit mass of a material one degree is a. a btu.
b. absolute zero.
c. its heat capacity.
d. a joule.

indicate valleys, hills, steepness and gentleness of slopes.

explanation:

contour lines on a map indicate elevation, or depth. numeric notations on contour lines refer to the level of elevation, or height about sea level.

5.6⋅10−^19  j

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