Question

what is represented by the colour blue on a map​

Answer 1

Answer:

water is often represented

but it can be sea ocean river and other water bodies unless mention in the map key

Answer 2

Answer:

mosyly it's h2O or water

Explanation:

The color brown is used to denote most contour lines on a map, which are relief features and elevations. Topographic maps use green to denote vegetation such as woods, while blue is used to denote water features like lakes, swamps, rivers, and drainage.