Which particle diagram represents one substance in the gas phase? Key
= atom of one element
= atom of another element
00
1.
3.
8
8
4.
2.

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:

it’s previous models   because when i picked that son of a gun’s answer it was wrong look for previous models because they might make it a different letter  

може ли да зареждате повече информация, моля