Electron dot diagrams are a way to illustrate the number of valence electrons for an element. The symbol for the element is surrounded by a dot for each valence electron. Match the following electron dot diagrams with an element: Electron dot diagram #1 Electron dot diagram #2 Electron dot diagram #3 Electron dot diagram #4 Sodium, Na Aluminum, Al Flourine, F Nitrogen, N

i can ! i just need to know what the paragraph is! : p

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.

answer;

18.5 seconds

explanation;

velocity is distance covered per unit time; it is given by displacement divided by time.

thus; time = displacement/velocity

total time = total displacement/velocity

total distance = 5000 meters south

total time = 5000/4.5

                  = 1111.11 seconds

but; 1 minute = 60 sec

thus; 1111.11 /60

                = 18.51 seconds

thus; the time taken is 18.5 seconds