The Peace Candle has undergone several changes and variations over the last 58 years.

The stars may undergo variation in the level of flare activity over periods lasting several years.

Since the club's foundation, Santos have had eight main crests, though all underwent minor variations.

Mars is still undergoing wild variations, which could explain its apparent history of extreme climate swings.

The climate of the Sahara has undergone enormous variations between wet and dry over the last few hundred thousand years.

United States policy of deterrence during the Cold War underwent significant variations.

The main theme again undergoes variations, this time for vocal soloists and chorus.

This explanation later underwent several variations in the press in Azerbaijan and among his defenders.

Both crests have undergone minor variations since their introduction.

As a result of the controlled change (the perturbation), the system will undergo variations which are measured by a chemical or physical detection method.