Social Studies skills: Difference between revisions

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**** barriers during warm weather  
**** barriers during warm weather  
**** and facilitators in cold weather (ice, lack of underbrush during winter, etc.)
**** and facilitators in cold weather (ice, lack of underbrush during winter, etc.)
* examples
** Wallace line see [https://en.wikipedia.org/wiki/Wallacea Wallacea]


===Regions===
===Regions===