Answer:
1. Shows the higher and lower parts of an area; they often use different colors and textures to display information.
2. The height of the land over sea level (the level of the ocean)
3. An area of land at the foot of a mountain range.
4. Low, flat land near the ocean.
5. A low area between mountains or hills.
6. Show a place at a particular time in history.
7. High barriers built to hold back floodwaters of a river or a lake.
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