Oxygen. Funny really.
[Oxygen:] Good.
[Carbondioxide:] Bad.
You need 2% bad to survive.
To little: you grow dizzy.
To much: You grow tired.
Oxygen. Funny really.
[Oxygen:] Good.
[Carbondioxide:] Bad.
You need 2% bad to survive.
To little: you grow dizzy.
To much: You grow tired.