Sentence examples for an barrier from inspiring English sources

Based on the geographic distribution of haplotypes we propose (i) a central role for western Amazonia in tapir diversification, with a key role of the ecological gradient along the transition between Andean subcloud forests and Amazon lowland forest, and (ii) that the Amazon river acted as an barrier to gene flow.

Responses included somewhat of a barrier or a strong barrier (excluded not a barrier).

"The name can be a barrier in a Christian society.

Distrust is also a barrier to a closer relationship.

Haven't they been a barrier, in a way?

Being an Indian was also a barrier.

A white square imitated a barrier object.

Drag a heavy mannequin around a barrier.

I see that as a barrier to social progress and a barrier to social cohesion.

A barrier has been irrevocably breached: a barrier against the world outside.

It's a barrier".