This variation provides the basis for a range of studies in what might be called evolutionary cytology.

This variation provides numerous niches which are filled by a diversity of species.

These variations provide a basis for distinguishing polyamory and swinging.

The resulting variation in paper density provides the antique or parchment paper look.

Saskatchewan possesses a continental climate and the seasonal variations in temperature provide a short growing season.

He further argued that variation, far from being problematic, actually provides the explanation for the existence of distinct species.

The variation in luminosity can provide information about the size of the black hole.

The variations, called polymorphisms, provide the chemical signposts or genetic markers.

Accordingly, variations in government spending and taxation might provide the best avenue for policies aimed at controlling the level of national income.

These variations provided an opportunity for recommendations by the research team.