Which radioactive decay process has the longest half-life and is useful in determining the absolute age of earth's oldest rocks?

Nuclear experimentation is a major global issue that affects relationships between countries. describe why countries try to limit the testing of nuclear weapons.

The chemical or mechanical process by which rock is gradually broken down eventually becoming soil

Will give brainliest asaap plz im in a major hurry to finish which of these pairs of objects exerts the greatest gravitational force on each other? object 1 and object 3 object 4 and object 3 object 1 and object 4 object 4 and object 2