Absolute dating tells you when an event occurred in years the relative age of different rock layers if one species of animal evolved before another the sequence of a series of events

  The sequence of a series of events.

Explanation:

  Some scientist prefers to use the therm chronometric or calendar instead of the word absolute.

  It is the process of attributing to an object or event a date in the past, by doing this the object could be placed in a previously established chronology. It is usually based on physical, chemical, and life properties of the materials of artifacts.

  I hope this answer helps you.

answer; ///i do believe the answer is (virus);