Other regional differences stem from energy efficiency measures taken at the local and state levels.

But these differences stem from evolution, not skin color, experts agree.

The difference of opinion stems from the value-neutral approach that the state has proposed.

The biggest differences stem from the way stock options are valued.

He believed that the differences in things stem from their essence.

In any event, the biggest differences stem from the way stock options are valued.

The essential differences stem from the impact of man.

Some experts say the difference stems from how the city accounts for the deaths, and the public has little sense of the true human toll.

However successful those steps were, experts say the difference stems just as much from how the deaths are counted.

This difference stems from the values of each respective culture.