Proposed studies include the evolution of the arctic biota through time, their adaptation to the special conditions of temperature and winter darkness in the Arctic, and their migrations into and out of the Arctic in response to changes in environmental conditions and the oceanic and epicontinental pathways by which the Arctic was episodically connected with other parts of the world ocean.
(Proposed studies; include; the evolution of the arctic biota) (the Arctic; was episodically connected; )
Proposed studies the Arctic
include was episodically connected
the evolution of the arctic biota