Plzzzzzzzzz help me!
If the age of the middle layer of a rock sample is between 600 million years and 1 billion years, which of the following could be the age of the topmost layer?
1.5 billion years to 2.5 billion years
2.5 billion years to 3.5 billion years
800 million years to 950 million years
200 million years to 550 million years
