Answer:
Check if the rock layer has fossils in it.
Explanation:
The rock layer from the inside out and the fossils will tell you how old the rock is.
Is that a test your taking?
Answer:
No, you cannot. The problem is that alcohol fumes are flammable. If you heat over an open flame you risk igniting the fumes which will start a chain reactions.
Explanation:
ggl and knowledge
A disease known as Multiple myeloma follows your requirements.
Hope it helped,
Happy homework/ study/ exam!