What type of substance would salt water be classified as? select all that apply. a.heterogeneous mixtureb. homogeneous mixturec. colloidd. solutione. suspension

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: