Technically, oxygen does kill us! When we breathe it in, it makes a chemical reaction inside our bodies that takes at least 80+ years to kill the average human (excluding the queen LOL), so in Laman's terms, yes homework does technically kill us.
But it can also kill you, Extended exposure to above-normal oxygen partial pressures, or shorter exposures to very high partial pressures, can cause oxidative damage to cell membranes leading to the collapse of the alveoli in the lungs. Pulmonary effects can present as early as within 24 hours of breathing pure oxygen. And it can explode.
