Question

is it dangerous for humans or any other organisms to breathe pure oxygen for long

Answer 1

Hello mate

Yes , it is true because pure oxygen is highly toxic , more oxygen in cells leads to hyperoxia and death also.

Answer 2

Answer:

for us oxygen is essential but for those organisms which do not use it , oxygen is toxic in fact our white blood cells use oxygen to kill invading bacteria, even for humans it may be dangerous to breathe pure oxygen reason for long