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Before the algae evolved, the oxygen % in the air was only a few%. After the algae, the % grew to over 20%. Which is why in the Carboniferous had giant plants and some large animals.
Since then, the oxygen % of the air has diminished.
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∙ 13y ago
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Can the calcium concentration of a sample increase over time?
Only by evaporation of the solvent (water?)
Used when the oxygen supply is inadequate over time?
Anaerobic glycolysis
What is the maximum oxygen concentration that can be delivered with a self inflating bag without an oxygen reservoir?
40% If a self-inflating bag is connected to a 100% oxygen source, oxygen enters the bag through tubing connected between an O source and the O inlet port on the bag. However, each time you squeeze it, air (O concentration 21%) is drawn into the bag through the air inlet. The air is dilutes the concentration of O in the bag. -NRP Textbook AHA and AAP, 6th Edition. pg. 118-119
For diffusion to occur which condition must be met?
Diffusion occurs when a substance moves from an area of high concentration to an area of low concentration. This will happen naturarally without disruption, But is more common (and will happen faster) in a warm environment.
What happens when a gas jar containing air is inverted over a gas jar containing brown red bromine vapour?
Diffusion is the movement of molecules from a region of high concentration to one of low concentration. As NO2 is heavier than air, diffusion takes place and hence after some time the brown colour is seen in jar containing air. Geethanjali Somisetty
What happens to metals when they come in contact with oxygen over a long period of time?
The oxygen oxidizes the metal, forming a metal oxide.
What happens if you take lorazapam over a long period of time?
Taking Lorazepam or Ativan, which is a benzodiazepine, over a long period of time results to impaired coordination, poor concentration, and allergic reactions.
Why our body cells have a different oxygen concentration compared to the blood flowing to them from our lungs?
Diffusion from high concentration to low concentration.The oxygen concentration in the air in the lungs is higher than in the blood.The oxygen concentration in the blood is higher than in body cells.If these differences in concentration did not exist oxygen could not move from the air to the blood to body cells. While we are alive body cells consume some of the oxygen they receive, reducing their oxygen concentration and maintaining these differences. When we die the body cells quit consuming oxygen and over a period of time the levels of oxygen slowly begin evening out (however as blood no longer moves from the lungs to the body oxygen diffusion slows dramatically, leaving some body cells with much lower oxygen levels than would be normal).
What occurs when some materials are exposed to oxygen and water over time and can result in rusting?
Oxidation happens.
What happens to a piece of pineapple not refrigerated?
it goes bad over a time period, which depends on conditions such as temperature and whether there is oxygen, since bacteria require oxygen.
What happens when you burn fuel in virtually no oxygen?
With virtually no oxygen, you can burn fuel for virtually no time before the oxygen runs out.
Do breathing exercises increase oxygen intake for long periods of time?
i'd say no. its more for concentration.
Why is the graph between time and concentration curve?
The graph between time and concentration is a curve because it represents the relationship between the two variables as one changes over time. Concentration is typically plotted on the y-axis and time on the x-axis. The resulting curve can vary depending on the rate of change of concentration over time, which can be influenced by factors such as the reaction kinetics, the initial concentrations, and the presence of reactants and products.
Can the calcium concentration of a sample increase over time?
Only by evaporation of the solvent (water?)
Why do burned things turn red?
because its hot.No, not excactly. Burning things turn blue mostly, but red for oxygen
Is carbon dioxide deadly in high concentration?
It is not toxic or anything. But, if you breathe only carbon dioxide with no oxygen for a sustained period of time, you will die from a lack of oxygen.
Used when the oxygen supply is inadequate over time?
Anaerobic glycolysis
