because your blood carries oxygen to you muscles. without much oxygen blood won't be able to take lots to your muscles, and with little oxygen your muscles won't work as well and therefore you won't run as quickly :)
About 5 seconds
Your kidney produces the hormone called as erythropoietin. This hormone is produced when kidneys get less oxygen. Under the influence of this hormone, the red bone marrow produce the red blood cells.
You may need to rephrase the question.Concentration indicates the amount of one thing found in another.Blood is a composite solution of water, salt, cells, proteins and nutrients.Perhaps you wondered whether these components became more concentrated, that is... there is less water in the blood.The way to lower water in the blood is by removal in the kidneys. This can be induced through a diuretic (urination inducing agent) such as caffeine or any number of drugs used for high blood pressure. http://en.wikipedia.org/wiki/DiureticOxygen, to my knowledge, does not have this effect.Another way to increase concentration of components of blood is to increase the contents just mentioned. Here, there may be some confirmation. Athletes performing at very high level will occasionally choose to train for their events in high altitude locations. These areas have less dense atmospheres (they are closer to outer space which has almost none at all). Supplementary oxygen is needed on high mountain climbs such as those conquering Mount Everest.When the body is deprived of oxygen during exertion over long periods of time, the body generates a greater number of red blood cells, those that carry oxygen. One could say the lack of oxygen has changed the concentration of this one component of blood. This increase in red blood cells indeed does appear to be at the expense of water content. The blood becomes a bit thicker. More background can be found here:http://en.wikipedia.org/wiki/Altitude_training
due to an increase in the stroke volume and also the increase in blood volume. it has to keep up with the required levels of oxygen, vital after long term exersice.
Cells can probably live for less than an hour without oxygen because it is the only thing that keeps them alive besides water. That is the reason why we breathe every second of the day, even when we are asleep because our cells need oxygen 24/7 to live.
It can and is.
It depends with the type of air that is forced in the blood stream. Oxygen will have no effect where as carbon monoxide will kill the person in less than 1 hour.
two minutes
You can't.How LONG, however? Maybe five minutes. Your blood has a LOT of oxygen dissolved in it. So long as you can breathe OUT, you're fine.
blood and oxygen
About 5 seconds
Blood is bright red due to the high concentrations of oxygen in it. This blood is known as oxygenated blood. Blood that appears dark in color or "blue" is blood that has been used by the body and has a higher concentration of carbon dioxide in it. This blood in known as deoxygenated blood!
There is oxygen in water as long as there is movement, but you should have a bubble wand or stone as well; the warmer the water, the less oxygen being provided.
it wont because it doesn't form into any thing
== == It is stressed, but will adapt. The circulatory system cannot work as efficiently, because there is less oxygen and CO2. After being at a high altitude for a long time, the body will adapt. It will produce more red blood cells so that it can pick up more oxygen, since less oxygen is carried by each hemoglobin at high altitudes.
Not very long, maybe a few days. That's because the higher the temperature in the water, the less oxygen. Eggs need oxygen to survive.
Cells anywhere in the body (especially in the brain) will die if deprived of oxygen enriched blood for long.