Answer:
three half-lives
Explanation:
Converting 12.5% to decimal gives 0.125
If one half life is 0.5.
0.5*0.5*0.5 gives 0.125
Thus 3-half lives has been elapsed
It erupts more often I think im not sure
Stone tools are more commonly found on archaeological sites thought to be associated with Homo habilis.
The ancient human species Homo habilis, also known as "handy man," lived in East and South Africa during the Early Pleistocene between 2.31 million and 1.65 million years ago (mya). When H. habilis was first described as a species in 1964, there was a lot of debate about it, and many scientists suggested that it be grouped with Australopithecus africanus—the only other early hominin species at the time—but as time went on and more significant discoveries were made, H. habilis gained more recognition. By the 1980s, it had been hypothesized that Homo habilis, which later gave rise to Homo erectus, was a direct ancestor of modern humans.
Learn more about Homo habilis here
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