Answer:
<u>This is a Topographic map.</u>
Explanation:
<em>Topographic maps are a detailed record of a land area, giving geographic positions and elevations for both natural and man-made features. They show the shape of the land the mountains, valleys, and plains by means of brown contour lines (lines of equal elevation above sea level).</em>
Hoped this helped.

I only photographed my textbook but this page gives a lot of information about your question
A line segment on a graph would be any line that isn't continuous. It would have dots on the ends instead of arrows. Is that what you're asking?
It is wet because it is touching the water. it is a natural habitat, so the fish itself does not feel wet.