Answer:
<em>A. 6,000 years</em>
Explanation:
Original sample N = 60 g
The half life of N/2 is 3000yrs
"""""""""""""""""""N/4 is 6000yrs
N/4 ===> 15 gram
it takes 6000yrs to decrease to 15grams
Yes this is true hope it helps
Scott Morrison is the prime minister
It is not all of the above I think it is A.People drink water that has been contaminated with animal feces.