Possible on what basis?
This is an outlandish claim that immediately disqualifies having any remotely serious conversation. Complete quackery.
I just demonstrated how oxygen levels do not impact lifespans as much as as you think. Cited scientific articles and studies to back up my claims and here you are attempting to dig deeper.
Its like you only see and hear what you want to see or hear. Fighting reality in order to sustain bible fairytales. If you want to be taken seriously bring proof of + 900 year old fossils, conduct an experiment that will show how increasing your oxygen intake by 30% will yield x10 human lifespan. If you can demonstrate it you will win a Nobel prize and I will be the first person to sign up for Tistuff oxygen therapy in order to live for 900 years.
But unfortunately you have nothing except empty claims a generic snake oil salesman.
Now retreat back to the shadow realm snake
"possible" on the basis that increased oxygen is a positive. note that i said "possible" i didnt say "is"
your guilty of the quackery your accusing me of. im merely showing a possibility to explain the long life recorded in ancient text.
causing you to shriek and do a lot of chit shoveling
lets not lose sight of the full conversation your trying to derail.
the substantial increase in oxygen is just part of the equation. other posters here have provided other parts
ok u go back to shoveling