In the first place, the very composition of families is changing.

In the 1950s the composition of the student body changed radically.

This fleet's composition had not changed since the beginning of the war.

The building plan was only pushed through a year later, when the composition of the board changed.

The composition of the research staff has also changed significantly.

As a result, the social composition of the population changed significantly.

The composition of the Parliament has changed over the years.

The current arms are first found on seals from the 16th century, and the composition has not changed since.

Maybe the composition of the air changed before it froze.

To my surprise, however, the composition of the English dance group had changed.