Who asked the question “can you split matter forever?”

Someone told me that Cherenkov radiation<br>is analogous to breaking the sound barrier. How long is the life span of an atom? Atoms are forever! ... Sometimes, when an atom doesn't have the 'right' number of neutrons, it becomes ... age of old organic matter, for example, some bits of wood found in an old Egyptian tomb.

Explanation:

i'm assuming that the correct answer is indeed the first one/ "a"..

1.solid

2.carbon dioxide

3.helium