Have you ever moved? Some animals move too! And if an animal moves from one place to another for weather or food, it’s called migration!
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SOURCES:
http://www.livescience.com/42297-bed-bugs-facts-information.html
http://www.pestworld.org/all-things-bed-bugs/bed-bug-facts-statistics/
http://www.bbc.com/earth/story/20150130-origin-of-bed-bugs-revealed
http://onlinelibrary.wiley.com/doi/10.1111/mec.13086/abstract;jsessionid=0865450CE1992A40361E1CC4C331F3CF.f03t01
http://www.bbc.com
