The hydrological cycle

The hydrological cycle is also known as the water cycle.

Seas and oceans contain 97% of the world's water, and ice holds 2%. That leaves just 1% of the world's water as fresh water on land or in the air. This water is recycled again and again through the process of evaporation, condensation and water transfers such as surface run-off.

Evaporation and condensation are part of the water cycleThe key stages in the hydrological cycle