A ruler-like symbol used to measure distance on a map is a scale. It shows the ratio of the distance on the map to the actual distance.
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B would be the false statement
There are four settled societies that each developed agriculture independently along major rivers that are traditionally considered the early river valley civilizations. The are the Mesopotamian civilizations, the Nile River civilizations, the Indus River civilizations, and the Yellow and Yangtze River civilizations.
In the oxide form, uranium can be disposed of as low-level radioactive waste at an approved disposal facility.