Is evaporation of water a physical change or a chemical change ?

Physical

Explanation:

Water is the chemical form of 2 hydrogen and 1 oxygen (H2O)

It is still H2O, as nothing made it chance that formula.

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:

you did not give any options thus this is the best answer i can give to you with this little information you have given

> they are both natural and not man made

> they can be tracked and predicted by the right tools

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