During the water cycle, the sun's energy evaporates water from the surface of earth. this water is the source of what

This water is the source of precipitation.

Explanation:

Precipitation is the fall of water in liquid (rain) or solid (snow and hail). It results from the condensation of water vapor that exists in the atmosphere. This water vapor is the result of the evaporation of oceans, rivers and lakes that occurs during the water cycle. In summary, we can say that the sun heats rivers, lakes and oceans, causing their water to evaporate in the form of water vapor. The water vapor is captured by the clouds, condenses and returns to the land in the form of liquid water through precipitation.

For this reason we can say that during the water cycle, evaporated water is the source of precipitation.