How many protons and electrons does a neutral atom of beryllium have A nine protons, nine electrons

B two protons, two electrons

C four protons, four electrons

D Four proton, five electrons

c

Explanation:

the atomic number is 4 thus beryllium contains 4 protons and 4 electrons

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: