You will start to feel like u something is sucking the air away from you . Then, you cannot breath normally . Later on, you will faint and slowly slowly you will die of 'not enough oxygen'. Unless someone give you oxygen....
well, you die
If there is not enough dissolved oxygen in water then most things will not be able to live in it.
Soot
You will die
The oxyhaemoglobin will break down and oxygen will release. :)
Dependent on the situation: If you don't have enough or any oxygen you will die.
The baby will suffer from asphyxia and cerebral palsy.
If the compression is high enough you get a diesel engine.
When you burn something without enough oxygen for complete burning, you get incomplete burning; for example, instead of getting carbon dioxide as a combustion product, you could get carbon monoxide.
When the body can't work fast enough to supply enough oxygen, glycolysis separates from the Kreb's cycle, and lactate is formed. Lactate is later broken down when there is enough oxygen. The breakdown of lactate is painful, which is why we get sore muscles after working out. When glycolysis and the Kreb's cycle separate, it is referred to as oxygen debt.
If there is enough oxygen, the hydrogen will ignite and burn rapidly, possible leading to an explosion.
Once oxygenated blood reaches the capillaries, the velocity of the blood is very slow - which favours the exchange of oxygen. Oxygen therefore diffuses across the walls of the capillaries into the tissues that need it.