The concept serves to explain how natural selection can perpetuate altruism.

The concepts of good and evil serve as a core driving force of the roleplay within the game.

This is believed to be unfortunate, because communication problems may occur and because the concepts serve different goals.

The concept of an isolated system can serve as a useful model approximating many real-world situations.

As it happens, a strikingly similar concept served as the frame for another recent portrait of female piety.

The Confucian concept of a moral hierarchy traditionally served as a check on arbitrary power in China.

This concept still serves as a framework for development in West Lethbridge.

The principles and concepts outlined in this chapter will serve as an introduction to these issues.

"And Germany is the country whose concept of intensive forest management served as a model for our own," he noted.

The concept of multilingual and multinational education implemented in these schools could serve as a model for Member States' educational systems.