Answer:
That won't run out in our lifetime. It can replenish itself naturally.
Explanation:
That would be an isotonic solution
Answer:
This specimen is also far too old for C-14 dating to be accurate, as well as for any other technique but palaeomagnetic dating.
Explanation:
The second part of the sentence is not accurate, since the remains were dated by uranium-lead dating. Carbon-14 dating measures ages in the tens of thousands of years, and uranium-lead dating measures in the millions to billions of years.