On any given night, provided that the sky is clear, all of the planets which can be seen with the naked eye will not be visible at the same time. this is because they all have different

The answer is Orbits fro those that might have the same question with different answer choices like me

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.

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