Will all of Carbon 14 in nature eventually decay?

Question

please explain why

Answer 1

There are three answers to your question.

The first answer is that all of carbon-14 in nature today will never all decay. The reason is that after 5500 years or so, half of it will be gone. After another 5500 years, half of that, for a total of three-quarters, will be gone. And so on and so ion until the last atom of carbon-14 that exists today will still be around when the universe comes to an end, whenever that is.

The second answer is that carbon-14 will always be with us. Carbon-14 is created all the time from bombardment of nitrogen-14 with cosmic rays. It is the constant rate of creation of carbon-14 that allows us to do carbon dating. So we will never eventually run out.

The third answer to your question is that one of the atoms of carbon-14 created at the Big Bang 18 billion years ago will still be with us at the end of the universe. Maybe then it will go "poof!"