What is the difference between prehistory and history?

The difference between ___________________ and _______________________ is the presence of __________________ and writing records. Prehistory, therefore, is history before the existence of ________________________________.
history, prehistory, writing, writing records.
Because there are no written records, historians are not __________ certain about the pre-historic past. There are many clues, however, such as:
Artifacts: _________________ relics, such as ______________________, pottery, cave markings, etc.
man-made / arrowheads
Ecofacts: _________________ relics, such as sharks teeth, _____________ and ___________.
Natural / bones/ fossils