There is significant variation in size among the different population areas.

Significant variation can be seen between individuals of the same population as well.

However, significant variations have been identified during different times of day.

In some cases there is even significant variation within species.

With certain flowers, however, the process has a significant variation.

Because of its size, there is significant variation in climate across the state.

The amount of oil on the lanes may have significant variation.

There was also significant variation between rural and urban areas.

What is to count as a significant variation in the circumstances?

Certain disorders, however, cause a significant variation in cell size.