What is the estimated age of the earth according to scientists?
a. 12.2 billion years
b. 4.6 billion years
c. 660 million years
d. 3.5 billion years
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Ответ:
Estimated that is 4.6 billion yrs old
Hope this helps
Ответ:
A patient was treated with stem cell around August 2010.
But I think it depends on the nature of the body.