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Activity for “Crosscutting Concepts: Progressions in Earth Systems”
Map reflects approximately 295 visits and 239 visitors from 109 locations (shown as 35 states). 
Based on periodically updated Google Analytics data. This is intended to show usage trends but may not capture all activity from every visitor.
Color intensity indicates activity level, from: Low High
Washington, DC
Visits: 4
Users: 4
Washington, DC is not visible on this map, due to it's small geographic size.