Water and Wastewater Terms Beginning N

A B C D E F G H I J K L M N O P Q R S T U V W Y Z

natural cycles

Cycles that take place in nature, such as the water or hydrologic cycle where water is transformed or changed from one form to another until the water has returned to the original form, thus completing the cycle. Other natural cycles include the life cycles of aquatic organisms and plants, nutrient cycles, and cycles of self- or natural purification.