When an atom gives off energy in the form of light, a. it becomes excited. b. it becomes more stable. c. it returns to ground state. d. both b & c e. none of the above.

i have a feeling this is a gay person trolling to make straights look bad.

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: