By seismic waves that are inscribed all over the surface of the earth from distance earthquakes.
I believe it is Sand. because when sand hardens it's like a type of case that conceals things like bones hope this helps and have a great day :-)
Answer:
Explanation:
Minerals keep your bones, muscles, heart, and brain working properly. Minerals are also important for making enzymes and hormones.
At least 3.5 billion years
