Which of these is one characteristic of topographic maps? A mountain peak. B location of a ravine. C steepness of a slope. D distance between two areas.

Steepness of a slope (C) is one characteristic of topographic maps.

"The more closely spaced the contour lines, the steeper the slope. You can find out exactly how steep the slope of the area you are interested in by subtracting the lowest elevation from the highest, and dividing the result by the horizontal distance."

several tissues working together form an organ, and several organs together make up an organisms.

the group of cell that carries out special jobs are tissue.