A student compares the boiling point of substances having different intermolecular forces. Which dependent variable did the student most likely use? (5 points) Select one:
a. Compounds made of either ions, atoms, or molecules
b. Type of source used to heat up the substances
c. Type of container used for the substances
d. Boiling points of various substances

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:

50.23 i believe is correct but don't quote me on that.