What type of change results in the formation of a new substance?

chemical change

Explanation:

the the answer is chemical change because in chemical change new substances are always formed. Example rusting of iron it's a chemical change and it cannot be reversed example 2 burning of paper forms ashes so therefore the new substance formed is ashes

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:

it's all four options.