Yes, less pull the closer to the center you get. Air etc. has mass but not nearly the density of rock or water.
And , due to different densities under the surface.
Yes, less pull the closer to the center you get. Air etc. has mass but not nearly the density of rock or water.
And [gravity does vary across the planet](https://www.popsci.com/uploads/2019/03/18/FZTIMLILZGORWSKJ6U3X6AN2BY.gif), due to different densities under the surface.
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