What is the advantage of having folded membrane surronding the cell or within the cytoplasm or within organelles

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:

hurricanes form in warm water

that tool would be a compass