The valence electrons of a germanium atom in the ground state are located in the
(1) first shell (3) third shell
(2) second shell (4) fourth shell

zfoods? ok, pressure is used to keep the heat inside and to keep the food perfect.

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: