Final answer:
South Africa fossil sites are dated using radiocarbon dating, while East Africa sites are dated using stratigraphy and indicator artifacts.
Step-by-step explanation:
South Africa and East Africa fossil sites can be dated using different dating techniques. In South Africa, archaeologists use radiocarbon dating to estimate the age of fossils. They can date the rocks in which the fossils are found, providing an estimate of when they were buried. On the other hand, in East Africa, paleoanthropologists use stratigraphy to determine the relative age of fossils by analyzing the layers of soil in which they are found. They also make use of indicator artifacts, such as fossils of specific animal species, to establish relative dates. These different dating methods help scientists understand the timeline of human history and evolution in different regions of Africa.