Final answer:
The process of looking for substances like beryllium as a 'cosmic clock' relies on spallation in physics.
Explanation:
Looking for substances like beryllium as a 'cosmic clock' relies on the process of spallation. Spallation is the process where high-energy cosmic rays collide with certain types of atoms, like beryllium, in space, creating new elements like helium and isotopes of other elements.
Learn more about Spallation in cosmic clock research here:
https://brainly.com/question/24718761
