Tyler Christopher is leaving 'General Hospital' â Nikolas has been recast at 'GH' with Nick Stabile. Get the details. Tyler Christopher is leaving 'General Hospital' â Nikolas has been recast at 'GH' with Nick Stabile.
Definition of BIOREGION. : a region whose limits are naturally defined by topographic and biological features (as mountain ranges and ecosystems).â bioÂ·reÂ·gionÂ·al \ËbÄ«-Å-ËrÄj-nÉl, -ËrÄ-jÉ-nÉl\ adjective.ADVERTISEMENT. a region whose limits are naturally defined by topographic and biological features (as mountain ranges and ecosystems).
biosphere. 1  the part of the earth's crust, waters, and atmosphere that supports life. 2  the ecosystem comprising the entire earth and the living organisms that inhabit it.