base your answer to the question on the rock ...
base your answer to the question on the rock columns below and on your knowledge of earth science. the rock layers have not been overturned. location w location x location y location z which numbered fossil best represents an index fossil?
Answer
# Brief Explanations:
An index fossil is widely - distributed and existed for a relatively short geological time. Fossil 1 is present in all four locations (W, X, Y, Z), indicating wide distribution.
# Answer:
1