Why might it be helpful to us to measure gravity fluctuations on Earth? What is the most important type of information it gives us and why do you think it would or would not be useful?

It is either a  proton or a neutron im almost positive. hope this .

Shania is trying to determine the oldest geologic unit on this map and the reason to why is she unable to do so is that  the units are all the same age.. when there is the same age, there will be no oldest geologic unit and that i cannot be credible.