Answer:
Precession
Explanation:
Various stars will act as northern stars due to precession, as well as the stars and planets arrayed around the celestial equator (zodiac) will steadily change locations. Every 73 years, they move around one degree. For the remainder of our days, and for a few millennia later, Polaris would stay the North Star.
It helps with the worlds water supply.
The English suffix -graphy means a "field of study" or related to "writing", and is an anglicization of the French -graphie inherited from the Latin -graphia, which is a transliterated direct borrowing from Greek.
