The shift by the Sahara Desert from a habitable region to a barren desert.

Introduced Earth microbes, if they find a suitable habitat, could colonise all habitable regions throughout the planet with surprising rapidity.

It was rare to sight one anywhere near habitable regions.

She had her own access hatches, to join the cutter's air locks to the habitable regions of MacArthur because hangar deck was usually in vacuum.

Nonetheless, its numbers may be adversely impacted by rainforest fragmentation which has caused forced relocation of groups to less habitable regions.

Major human environmental impacts occur in the more habitable regions of the ocean fringes - the estuaries, coastline and bays.

This represented the upper boundary of the habitable region of naturally modified gravity.

Azlaroc was not a planet, and what lay beneath its habitable region was no mere molten rock.

These sources indicate that during the millennia preceding the Christian Era, the Sahara was a more habitable region than it is today and supported a flourishing culture.

North Africa shifts from a habitable region to a barren desert.