Look at the diagram below. what statement is correct? a. box a is an element and box b is a compound. b. box a is a compound and box b is an element. c. box a is an element and box b is a mixture. d. box and a and box b are both mixtures.

Box A is an element and Box B is a mixture.

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.