Indeed, understanding how structures develop is one of the major problem areas in biology.

It is important to note that at this Early Classic time period, a distinct social structure had developed.

These abilities seem particularly apt to change over adolescence, as various structures in the brain develop.

The structures of the stem and the cap develop simultaneously.

In this time, the social structure developed into a hierarchy.

It should focus upon understanding that structure in order to develop a competitive strategy.

The structure of large churches differed regionally and developed across the centuries.

In some countries rugby union's administration and structure have not developed along with its professionalism.

We consider it essential that democratic structures and national political parties should develop.

The specific structure of the event has been changing and developing through the years.