Answer:
The given statement is true.
Step-by-step explanation:
The period at which a particular sequence of events occur is called timescale. The physical divisions of rocks which are found on the earth’s geological surface hence relative time represents the order of events in which they occur.
Hence with the evolution of each era there is no specific time listed because they do not give the exact evolution of different era’s from the evolution of earth thousand million years ago.
Note: Era is the beginning of each time period