The frost-thaw cycle has caused some cracking and spalling of the concrete.

These cycles would have caused fluctuation in the diversity and extent of rainforests.

Tidal cycles cause water to move toward and away from the Golden Gate four times in a 24 hour period.

The main long-term cycle causes the axial tilt to fluctuate between about 22.1 and 24.5 with a period of 41,000 years.

The third model assumes that cycles in the convection cause the alternations and the modulations.

This vicious cycle causes a downward spiral in your health.

Climate change and cycles caused the lakes in the system to expand and shrink through time.

However, the current cycle of violence is causing widespread suffering and this is taking the parties even further away from a negotiated settlement.

The resulting current that cycles through the stroke channel causes an enormous transfer of energy.