In this task, you are given a question and answer for that. The answer will fill in the blank or will complete the unfinished question. Your task is to provide an explanation based on the given question or fill-in-the-blank statement, and answer.

[Q]: Question: If Milo is measuring isotopes and he notices that they seem to decay slower then average, what does that mean about the age of the specimen he is examining? 
 Answer: older
[A]: Because these isotopes decay more slowly, they can be used to date much older specimens.


[Q]: Question: Decreasing the mass of an object causes its inertia to 
 Answer: decrease
[A]: The full box is harder to move because it has greater mass and therefore greater inertia.


[Q]: Question: If Jim is exploring layers of rock and he moves deeper into the Earth, what happens to the age of the rock? 
 Answer: older
[A]:
The main law is the law of superposition. This law states that deeper rock layers are older than layers closer to the surface.