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Humans breathe pure oxygen in diving suits because that is the gas humans and animals are required to have to stay alive and not suffocate. If a person scuba dives with pure oxygen they should dip a small object in ponaris and rub it on the inside of their nose so the tender skin of the inner nostril doesn't crack and bleed
The air we all breath is over 70% nitrogen and although we do not need this it is not toxic to us, most of the rest of the air we breath is the oxygen we need to remain alive.
It is not alive true, but it depends on what it is made of.
Most liquid laundry detergents are alive
No
Keepin' the Summer Alive was created in 1919-07.
Keepin' Halloween Alive was created on 2009-09-29.
no the atmosphere is not alive
You wouldn't be here / alive without atmosphere.
The atmosphere isn't alive, so it can't be "killed".
It keeps stuff alive
When some saber-toothed cats where alive humans were also so yes.
Yes.
yes
is daisy alive or not
There are plenty of mammals still alive. Us humans for instance.
Yes, if you typed this question then you're body is at least partially functional and you are alive.