Answer:
Certain fossils, called index fossils, help geologists match rock layers. To be useful as an index fossil, a fossil must be widely distributed and represent a type of organism that existed for a brief time period.
Answer:
yaaa tinitingan ang loca las na lan sa utin con 10
Explanation:
To gather data or information or to observe. HOPE THIS HELPS!! IF SOO LET ME KNOOW
