Much less than the approximate 21% in the air. Perhaps half that. Fish need a large energy expenditure to strain oxygen from the water. Most of the oxygen produced by phytoplankton, for instance, is vented into the atmosphere.
the aircontains 20.93% oxygen-whether you are swimming in the Dead Sea in Israel (1,369 feet or 417 meters below sea level) or standing on top of Mount Everest in Nepal (29,035 feet or 8,850 meters above sea level). the barometric pressure is lower the higher in altitude you go so the pressure of oxygen is lower therefore its harder for your lungs to absorb the oxygen.
21%
2.66666666667 is the decimal of oxygen in the air
The earth's atmosphere at sea level.
Approx 180ml
At the summit of Mount Everest there is approximately only 33% of the oxygen that is available at sea level.The higher you climb any mountain the less oxygen there is to breathe. This is why climbers carry oxygen cylinders on there backs to help them breathe more easliy.The proportion of Oxygen to other elements is actually very similar to sea level, but the total amount of air or atmosphere is only about one-third that of sea-level, so there is about one-third as much oxygen as there is at sea level.
Oxygen is it's own element. Air is a combination of elements. That question is not even a sentence, but I think your answer is Air is 19% Oxygen at sea level.
At the summit of Mount Everest there is approximately 33% of the oxygen that is available at sea level.
plants
From sea level to an altitude of 300 meters there is enough oxygen. After 300 meters of altitude, there is enough oxygen. 4500 meters to 4800 meters of altitude and low atmospheric pressure due to lack of oxygen to human breath.
Modern nuclear submarines make their own oxygen as needed by electrolyzing sea water. The amount of oxygen carried by conventional submarines depends on the design and size of the particular submarine.
Answer: Because the percentage of oxygen in the air is not as much as it is at sea level. When higher altitude is attained, oxygen levels drop. Hope this helps.
no
Definitely not. The fish in the sea take in the dissolved oxygen in the sea thru their gills.
Oxygen does dissolve into sea water, as do many other gasses such as CO2.
because oxygen has been around for as long as there was sea life and when the first one came out of the sea they technically discovered oxygen
Oxygen is more soluble in fresh water than it is in sea water, therefore there is more dissolved oxygen in river water than sea water.