The geoid on the other hand represents the physical surface of the earth and is subject to constant change by seismic effects and global warming among other things.
(The geoid on the other hand; represents; the physical surface of the earth) (The geoid on the other hand; is; subject to constant change by seismic effects and global warming among other things)
The geoid on the other hand The geoid on the other hand
represents is
the physical surface of the earth
subject to constant change by seismic effects and global warming among other things