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Separated Relatives

APBIO-GMLCNX

Eurasian red squirrels are found throughout Europe and Northern Asia. Eastern grey squirrels are native to eastern North America, although the species was introduced to Europe and is now invasive. These squirrels are members of the subspecies Sciurus and are close relatives despite evolving on different continents.

Species that share a common ancestor may be found on different continents as a result of

A

adaptive radiation.

B

behavioral isolation.

C

changes in sea level due to climate change.

D

temporal isolation.