Question
Fossils that are good indicators of a particular geologic time period are useful for correlating rock formations of similar age across great distances because they have the following characteristics: they are easy to identify, limited to a short span of geologic time, and are restricted geographically to small areas. they are easy to identify, existed for a long span of geologic time, and are widespread geographically they are easy to identify, limited to a short span of geologic time, and are widespread geographically they are easy to identify, existed for a long span of geologic time, and are restricted geographically to small areas.
Explanation / Answer
option D