While biological mechanisms for this effect have not yet been definitively established, the weight of the available epidemiological evidence supports an assumption of causality.
Current epidemiological evidence shows some causality.
The biological mechanisms for this effect have already been proven.
There are rivers and beaches that are covered in light-colored sand.
The 1609 settlement was open to visitors from all backgrounds.
There is a law in the above list that each reader will support.
Give up watching those movies.
The street performer has a glowing eye.
There is a canine in the water.