Ans: Less than ~8%.....During sleep the requirements are the least so you could last longer. Air is made up of ~20% oxygen...going to an altitude of 10kft its important to have added oxygen to prevent hypoxia.
At the level of the capillaries, oxygen will diffuse out of the saturated red blood cells down their concentration gradient into the tissues where their concentration is lowest.
The lowest level is the cell.
Oxygen is the gas humans and animals need to breathe in.
Oxygen levels are highest in the lungs (during inhalation) and lowest in the tissues (after oxygen is delivered). Carbon dioxide levels are highest in the tissues (after cellular respiration) and lowest in the lungs (during exhalation).
The lowest desert elevation level is the Dead Sea, with its surface sitting at about 1,412 feet (430.5 meters) below sea level.
The highest oxygen levels on Earth are typically found in remote areas with abundant vegetation and minimal pollution. The lowest oxygen levels can be found in very high altitudes, such as at the summit of Mount Everest, where the air is thin.
Oh yes. The troposphere is the lowest level of the atmosphere, the level that we live and breathe in, and it does have lots of oxygen in it, until you get to very high altitudes.
The lowest amount of oxygen a human can survive on is approximately 10% oxygen concentration. Below this level, hypoxia (oxygen deficiency) can occur, leading to symptoms such as dizziness, confusion, and eventually unconsciousness if not corrected.
22% oxygen at sea level
At the level of the capillaries, oxygen will diffuse out of the saturated red blood cells down their concentration gradient into the tissues where their concentration is lowest.
what is the lowest level of the CNS
There is no specific lowest level of metabolism.
The lowest level is the cell.
The lowest level is the Outcastes ("untouchables")
the lowest level is genin and the highest level is kage.
the primary structure is the lowest level
Oregon's lowest point is level with the Pacific Ocean