What work are you taking about?
There is no work involved in exchanging oxygen with carbon dioxide. The only work done is bringing air in and out of the lungs and moving blood through the lungs. The gas exchange occurs passively.
Available oxygen is oxygen in gas form, not dissolved in liquid. The lungs cannot remove oxygen from liquid. I don't know where you heard that.
Perflurocarbons.
Of course, having been shown to be wrong, again, you will doubtless change your position and claim that only a fool or a pedant would be unable to see that what you really meant was something other than what you said. Again.
You should probably check the accuracy of what you say before saying it; and you should probably also try to avoid logical fallacies. But I am not going to hold my Perflurocarbons.
I've never said that anything I say shouldn't be checked.
But the topic was water. Not your diversion.
You really can't help yourself, can you?
Even after I predicted it, you had to make the claim that you were right, when you made a seven word statement that I just demonstrated to be wrong.
The 'topic' was "Available oxygen is oxygen
in gas form, not dissolved in liquid. The lungs cannot remove oxygen from liquid."
You could have simply said "I was wrong". But instead you doubled down on your error.
Or are you claiming that 'in gas form' includes any liquid other than water?