the age of the rock the slope of the rock the density of the rock the weathering of the rock
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Scientists found trilobite and brachiopod index fossils in cliffs a great distance apart from each other. What can scientists infer about the rocks in which these fossils were found?
Possibilities:
- the age of the rock
- the slope of the rock
- the density of the rock
- the weathering of the rock

the age of the rock