Question

Why is Pure form of oxygen harmful to Living beings?

Answer 1

We talk about divers using Scuba tanks that contain a only a small concentration of oxygen diluted in a mixture of other gasses such as nitrogen or helium.

From what I've read, this is because breathing pure oxygen, or a concentration that exceeds the normal partial-pressure of oxygen at sea level, when diving can cause major health problems.

Oxygen Toxicity is a phrase that keeps getting repeated, though I've found sparse few details surrounding what it actually is/means.

I ask therefore: How does oxygen become toxic to humans when breathed-in at high concentrations or underwater or wherever — on a chemical/biolgical level — and also whythis is the case?

Answer 2

Oxygen toxcity results from enhalling molecular oxygen at elevated concentration .In serves case cellular damage and health which effect most commonly seen in central nervous system lunge and eyes