These plants have a 2-year 'growth cycle'. [=the plants live and die within two years]
The water is 'cycled' back into/through the system after it has been used.
We have to wait for the dishwasher's wash and dry 'cycles' to end.
(..) Molecules change their bonds. Elements. They combine and change into compounds. Well, that's... That's all of life, right? I mean, it's just... It's the constant, it's the cycle. It's solution, dissolution, just over and over and over. It is growth, then decay, then transformation. (..)2008 TvShow: Breaking Bad Title: Pilot Season: 1 Episode 1