Answer: a. precipitation (rain), person, wastewater, clouds, precipitation(rain).
Water cycle also known as hydrological cycle describes how water evaporates from the water body or surface of the earth, rises in the atmosphere as water vapor which forms clouds, clouds condenses in the form of rain, hence water comes back in the water body or earth surface.
Here, precipitation will result in accumulation of water on earth or water body, this water is utilized by person, the water is then converted into wastewater, the cloud formation takes place when water evaporates from waste water, these clouds condenses to cause precipitation.
